Simplification is required.
1) Lab is ok, but ability to hire\fire individual sientist is not needed, lab == 10 sience points that you can distribute over projects manually or just let it work automatically.
If you need more points - build other lab that will work automatically if you not stated othervice.
2) Barracks shoud include everything needed for your xenonauts, including medical care, training, place to sleep, everything, size can be set to 2*2 and named something like "military installation".
Also it shoud be automatically upgraded if you discover new technology.
3) Workshop shoud include storage, work just like lab, distributing production power automatically, storage size shoud stay infinite.
4) Only one type of radar that automatically upgrade when new technology discovered
5) Garage\hangar shoud keep single unit combat ready and other unit mothballed, in case of existing unit lost in action, this will provide ability to recover in 24 hours by recomission of mothballed unit.
6) Hunters and interceptors shoud not be right from the begining, it shoud be option - shoot enemy units airborne and get easy ground combat or get ground combat with support of hunter.
7) Base size of 5*5 will be fine, this will allow player to build specialized bases, just to place hurge amount of radars or sience facility.
everything at once base shoud not be possible.