Here is the complete tech tree, should be pretty easy to remember.
I'm intending this to be mp-balanced, if possible, throwing away the current scav stats; of course it'd require quite some testing to achieve, and of course the stats may change in the process.
The mod includes two sorts of labs (you need to have an advanced lab actually built to carry out advanced research, like rockets, mortars and choppers), two sorts of factories (some tanks like bus and firetruck can only be produced in the heavy factory), two sorts of construction droids (the excavator is building faster than crane, unproportionally expensive and hard to destroy; use it to build on unsafe spots or when you are at truck limits and still want more).
This mod includes a skirmish AI called NullBot ~Mini~; no other AI is known to work with this mod, so make sure you select it when you want to play a skirmish game.