Sai'ke, why don't you implement it like a post gain slider for every band similar to ReaXcomp? I mean if you want a compressor for every band anyway it would make sense to just use this as the solution.
I agree, that an automatic gain compensation wouldn't make sense because no one knows how the people want to make their sound. But without manual gain adjustment people have no choice between drive and gain, they always get gain. You know what I mean?
Greetings
ELi