I'd like to see a new OC brought in from outside. I'm not sure Boras is the answer although he did at least earn some consideration.
I don't believe this talk of Fisher having this over-riding influence over his OCs. In the 2013 season, under Schotty, Sam Bradford was on course for something like 3800 yards and 32 TDs (if his stats in the 7 games he played are extrapolated out and you also have to remember that it was, in reality, 6 and a bit games rather than a full 7 so you could argue the stats would have been marginally higher).
16 QBs this season threw for more than 3800 yards so its not a world beating stat by any means and there are lots of holes that can be picked in this argument but Zac Stacy ran for 973 yards that season so no one can argue that Fisher was forced away from his preferred running game due to personnel issues. His beloved running game was present and correct. The extrapolated stats I've given above would have made this year's Rams offense look massively different.
My view is that Fisher wasn't hamstringing Schotty with any kind of insistence on an offensive style so I don't think its necessarily reasonable to assume he'll hamstring whoever is OC next year (especially as that individual will have had a full offseason to prepare as well as a say in who gets drafted presumably).
Obviously there were and are other factors that are holding the offense back that could be laid at Fisher's feet but I think he gets an unfair reputation in regard to his alleged influence over OCs.