Thank you for this mod. I was also wanting to do this mod. You saved me alot of work and headaches.
Which reapers are you using? Their appears to be a number of them. And today I found a mod that is supposedly a unused reaper in the dev kit called Venators. Maybe theses could be included but disabled for people that don't want them? I guess they have some different functions and are tamable. Getting ready to play with that mod to learn more.
I'm glad you made the gas collectors usable. I havn't played wit it yet, but is their any thoughts about having them only so close to each other? Maybe you already did this, havn't tried it yet.
One other thing, the fungal wood. I see you currently have thatch to turn into it. What I was wanting to try to do was to actually make something like a compost pile. You put the wood in and mushrooms, or maybe the Aggeravic mushrooms to make funglewood and more Aggeravic Mushrooms.
I'm kind of thinking make mushroom seeds. Since the rare mushrooms grow everyware, meaning land and water. Maybe we could and a seed extractor to get the different mushroom seeds and then we could grow them. This would be great to do the fungalwood. Add wood and Aggeravic seeds to get funglewood and the Aggeravic mushrooms. Maybe Aquatic Mushrooms have to be grown in water with say seeds, poop and thatch. In turn we get the Aquatic Mushroom and Fertizer. It may even be possible to have to grow all the mushrooms under dark considitions or atleast indoors. Kinda like how greenhouses boost plant growth. Their maybe a mechanism in place to do this, not sure. Or this could be a requirement for the one that have biolumence properties.
These are just some ideas that could put your mod over the top. I see their are cold mushrooms according to the wiki so a AC unit could be a requirement to grow them.
As for the different gems go. I'm almost thinking they should have some other property to make them blue or red or whatnot. Not just crystal. Maybe even some kind of pressure forge to harden crystal into gem. You could almost require making some kind of chemical to add with the crystal in the hardening forge to make the given gems. Hey, aberration is a broken ark and under different and harsh conditions right? These items don't have to be super easy to make.

BTW good work on the mod you created, and thank you.