True... I added Carpenter's Blocks because it was requested. I might remove it.Well here is my opinions.
1) Tried it. Like it alot.
2) Forestry tends to add a lot of lag especially later into the game when you have loads of alviaries . If not for that reason I would consider adding it.
3) While extra cells is nice it really only helps extreme late game when you have tens of thousands of resources but then you could just build more ME drives instead. Personally I could give or take on the mod.
4) I would really like to see more packs without minechem than with right now. So many packs are using it right now that it is getting kind of boring. From what I read on the curse page because the main page isn't working MO sounds a lot like EE3 but with a power requirement. So I am for the switch. Plus minechem has a world ending crash once you get into radioactive materials.
5) I play mostly single player so OMT wouldn't have much of an effect for me. I could give or take on it.
6) Personally I would say the cosmetic mods could go, like carpenter's blocks and bibliocraft, but that is just my opinion because I really don't build for aesthetics.
Thanks for the feedback; it really helps.
About OMT: it can be used to kill hostile mobs as well as players. This would be useful for a Wither farm, or generic base defense, especially early game.