Before he went there, the Tigers didn't hadn't been over .500 the prior 8 years.
I don't think you can lay the current state of the Tigers entirely on Dombrowski.
Mike Illitch took over in '92:
only one season above .500 in the 90's
Tigers averaged 88 wins from 06-14 (thanks to Dombrowski)
Tigers won 86 games in 2016 largely due to Dombrowski guys
suckage for the 4 years since then
I think the biggest problem in Detroit is the owner not whoever has been the GM.