It's quite the extensive list, so I'll probably need to compile something more substantial as a reference.
UE's balance is fairly solid internally, as are the "standard" Forge mods - it's when you put them together that shenanigans begin as they run on different paradigms. Config options would work here as well as direct numbers passes.
It's AtomSci and Mekanism that are the worst offenders so far based on testing, although they're a lot closer now than they ever were.
You should be specific, Velo. Specific things I can think of offhand:
- We need to help Calclavia get good steam ratio numbers. DoctorOr was looking at this.
- Steel creation from Mekanism can muck with things.
- It'd be great if we could easily introduce lossiness to the Mekanism power conversion. Sometimes it's not good that it's so efficient.
- It'd be great if MFFS had some smarts about other mods. Like for example, a config option for portable holes.