People are "getting there" different ways... Post #120 in this thread is just letting it rip but putting some parametric at the end of the chain.
For me personally, I just pulled back the speaker impedance curve resonances in the fractal a little bit- I never thought to try a parametric. That may be fine as well.
When I was still trying to run FRFR, I always found it hard to keep the amp from being harsh. I could tame the high end with EQ but it would then be dull. Rolling the impedance resonances back a little bit seemed to be the perfect fix for me and because of that, I wouldn't be concerned about the impact on FOH since I wouldn't want that to be harsh either.