Hey there, I understand you're working on the science part a lot, but I'm more interested in the basic (spaceport) version. I did a lot of experimenting with it and well, it is brilliant so far, although with small exceptions! One is the greenhouses themselves as a model/hitbox. They lack a clean outline in the VAB, meaning you can't go forth and attach 4 landing legs to them. Now if you use a big round battery on each end, sure you can just attach them to those - but that's a lot of battery storage for a station there - and batteries are as wobbly as ASAS modules, coming off under stress from landing. It would be extremely helpful if you could give them a really round hitbox model at each end of the greenhouse, just so we can attach stuff properly, maybe the width of a big landing leg. It already looks round, but the hitbox seems to be hexagonal, with the edges on the sides instead of the flat surface. Maybe even flipping the hitbox does the trick already, or making it octagonal. Second issue I'm having is with the part that's supposed to be inflatable, for bases. It pushes the top and the bottom away on unfolding, the bottom ending up higher in the air than the bottom of the actual greenhouse. Also, stuff attached above and below will come off from unfolding, meaning you can't do anything with it anymore. Wouldn't it be better to keep the height of the base part the same and instead open it like a cargo bay e.g. from B9 or 6S, pushing it out to the side and then inflating it to have its bottom in line with the bottom of the part? That way we could really make use of it by attaching it to the sides of something, door facing outwards, and have 4 greenhouses right there. Not really a big issue next, but since I'm using TAC LS, my Kerbals would be a cheap ressource for getting CO2 and waste. Sadly they don't produce a lot of either, while the greenhouses etc consume quite a lot of them. I'm already lacking parts to produce water, so constant water shipments are a must (until Taranis comes up with water supply parts).. but CO2 shipments tend to really dangerously increase the part count when the tanker approaches the base. Wondering if we could either get one or two bigger containers of CO2 (say, X200-16 or X200-32) or if you would, for compatibility, reduce the amount of CO2 and waste needed over time so.. say 1 Kerbals per greenhouse could already meet the requirements? Would mean one gardener per greenhouse to keep it fully functional, I kinda like the idea of that. Just my thoughts about long term usability of those awesome parts, I hope they give you an idea. Keep up the good work!