Its not 100% on Gase, but i would give him 80% of accountability as far as personnel/offensive scheme goes. My biggest beef with the FO is the lack of foresight in regards to the QB position.
The defense is finally fielding some talent and if not for the injuries/suspensions (TJ, Kwon and Lippett) dare I say some depth? I get that sounds a bit crazy coming off 40 points, but factor in 2 pick sixes, short fields and TOP, even that performance wasn't terrible.
That 2016 draft was all Gase except for the CB Howard which was the definition of filling a need. Thus far, those pieces haven't had much of an impact. He brought in Cutler not the FO. He brought on Bushrod and converted him to guard, not the FO. This is his scheme, his playbook and his offensive line, the FO is doing whatever he requests and doing their due dilligence in the late round/UDFA market and on defense.