Quotatious is right, I'm a huge fan. I'm a basketball fan mostly because of Dantley, so I'm sure I can't provide the most objective view.

That said, I don't have him in my top 40. I had him at 45 when I made a list last December. Is that overrating him? Probably. I'm sure I'm not immune from that.
If you want to see why I rate him that high,
here is a link to a post I made when voting for him in the top 100 project, which contains links to other posts I made on various Dantley-related things.
A brief (if I can) summary:
Scoring: By all 3 Score+ metrics I developed, Dantley comes out at #1, pretty comfortably. In essence, nobody in history had a better combination of volume and efficiency in terms of direct scoreboard impact in the regular season. At his best, he was giving Utah an extra 6+ points per game above what could be expected with average efficiency and the same number of shots. When I get time, I'll revisit the clever way of allocating stats to postseasons prior to 1985 based on team totals, although this led me to a barrier in which the sums of individual stats from a team did not add up to the team totals on bbref - I should probably get around to writing them about it. In any case, he is in very rarefied air as a scorer.
Defense: I've read a quote from Dantley that he was encouraged by coaches to put more effort in on offense, and that the other high-flying small forwards all had similar instructions... score, score, score! Dantley compares quite favorably to guys like English, Wilkins, Aguirre, King, Worthy, Marques Johnson, etc. in head-to-head matchups. Surprisingly, those guys (and others like Bird and Erving) saw a drop in their scoring averages of over 1 PPG against Dantley in seasons where both played at least 28 MPG. Surely, strong team defenses late in his stint in Utah and throughout his time in Detroit help that, but even before his teams were sporting good defenses in Utah, his opponents were kept right around their averages from 1980-82. Dantley also really ramped up the defense in Detroit in the playoffs, and was applauded by teammates, coaches, and even opponents for it.
Personality: Dantley got a bit of a reputation as a bad seed, and I think it's largely unwarranted. It seems mostly to come from 2 sources: the Frank Layden dispute (which Layden went on record taking the lion's shame of the blame for) and Isiah Thomas. Other teammates really liked him (notably Dumars and Salley). Dantley was not a gregarious guy - he came from a poor family and took a no-nonsense approach to the game. He was one of the few to lift weights in the 70s, and he kept his body in great shape. It was a big deal for him to spend a week after each season ended eating whatever he wanted (peach cobbler a particular favorite), but then he went straight back on his strict diet (which he taught to teammates like Salley). He started off a chubby kid in college but quickly became one of the most in-shape players you'd find. He was quiet, and probably not a very good leader as a result overall (though he inspired those young Pistons a lot in the playoffs, even becoming animated when needed). If you listen to his Hall of Fame induction speech, you'll see that he's not particularly eloquent. Check out this video from 1984 in which he discusses his MVP chances:
[youtube]https://www.youtube.com/watch?v=cBBEHRjH8OY[/youtube]
He didn't seem like somebody who wanted much attention.
Impact: This is where he falls down in a lot of people's eyes. Utah's team offense was generally pretty bad while he was there at the peak of his powers. His offensive support was often bottom-of-the-barrel, however, and I took a look at decomposing offensive win shares to see if he "poached" from his teammates based on expectations through aging curves, and while in Utah, he didn't really seem to do that. By far the biggest thing dragging Utah's offense down was offensive rebounding, though:

They weren't good at offensive rebounding before he arrived, and they were bad after he left as well, so it's probably not a Dantley problem. Given that offensive rebounding is something that is a team effort and is subject to strategy, those offenses may very well have been closer to average than bad.
Related to this, there also appears to be a big gap between his box score production and his WOWY numbers, where he looks to be a modest positive at times and a modest negative at other times. I made some posts examining the 1983 and 1988 seasons (where he doesn't look so good) in detail, with some other factors that could explain them.
In general, I think we have to be a bit careful with WOWY data from pre-PBP seasons. In most cases, you are missing a majority of the minutes a player is off the court. Frank Layden even went so far as to say that the Jazz had a lot of first quarter leads with Dantley and Griffith that fell apart once he had to sub them out (I believe it was in 1982).
I've looked at the relationship between simple WOWY numbers (difference in HCA-adjusted SRS in games with and without a player) vs. +/- per 100 possessions from basketball-reference, and the correlation may not be as strong as you might think.
Here are some numbers for LaMarcus Aldridge in Portland:
Code: Select all
Season Games Missed SRS Diff +/-
2007 19 1.30 4.9
2008 6 -16.19 2.9
2009 1 -1.96 10.2
2010 4 9.39 3.6
2011 1 24.99 15.0
2012 11 6.38 12.4
2013 8 6.05 9.4
2014 13 0.80 8.8
2015 11 7.94 5.2
Here's a graph, with bigger circles meaning there were more games missed (should be a better estimate):

The correlation between SRS difference and +/- per 100 possessions, weighted by number of games missed, was only 0.45.
Add to that the fact that the Jazz organization was a complete mess, and I'm not sure how much can be read into those numbers for Dantley. This is a team that was considered among the cheapest in the league - they'd take buses instead of flights sometimes, and the owners were strongly considering moving the team to Minnesota. They were struck by tragedies (Terry Furlow's car crash, Bill Robinzine's suicide). They had head cases - Bernard King spiraled out of control and Larry Drew had 2 drug incidents, the second of which got him baneed for life. And they were also incompetent, trading Dominique Wilkins for the aforementioned Drew without doing any background checks and giving roles to bit players that were much bigger than they ever saw elsewhere in their career, if they even lasted in the NBA.
I wouldn't be surprised if a group of dedicated fans like us went through game tape once it is made available through the promised digital archive to record lineup +/- for games, and if this is done, it wouldn't surprise me if Dantley looks better than he does looking at raw WOWY numbers.
Ultimately, he was a hyper-elite scorer who didn't consistently bring much else to the table. I don't think he's worth a place in the top 40, but I also think the reputation he developed as a malcontent and an empty stats guy goes too far.