Both of my dynasty leagues have at least one open spot.
First one is head-to-head points with ten keepers.
http://games.espn.go.com/fba/leagueoffice?leagueId=2736&seasonId=2016 Team 11 is open. Not very good, but probably not as bad as the record it has seeing as the lineup was never set. Should end up with a high pick too (we do a lottery for the non-playoff teams)
Second league I just joined about midway through the season.
http://games.espn.go.com/fba/leagueoffice?leagueId=5101&seasonId=2016 I think the 76ers, Nets, and Blazers are all open. The scoring is a little different than most but its a head-to-head points league too but with 15 keepers.