Well I made it as far as ProjectE and made the first MkII Condenser. Up until that point I enjoyed the pack. Didn't have a big issue with EFab. IMO it's no more time gated than pretty much all other mods, except it has a timer and not a progress bar. I'd never used Glacticraft before so that was interesting. But the ProjectE section has sort of grinded me down. The thought of what I'd need to do, the endless Dragon Breath collection, the endless creation of Fermented Spider-Eyes etc. Just fills me with the screaming Heebie-Jeebies. It's all doable, but monotonous and time consuming. I'm not sure I will actually finish all the quests. It sort of makes me wonder if the Pack Designer(s) actually played there own pack to the end. I sort of think if they had then Red Matter may have been assigned EMC (albeit an extraordinary large amount) or they'd be a different method to obtain it once you got past the MK II.