A counterpoint to feats being overpowered if baseline vore is buffed is that buffing vore as a baseline has made those feats redundant. Pathfinder is infamous for feat bloat outside of it's dedicated fanbase and the VSRD is no different. Don't take them and the problem goes away without people needing to devote their character to eating people in combat and being behind pathfinder's expected power curve when they cannot as a result.