Some questions:
- I hear there is a maneuver stat that effects chance to hit, but I can't find it.
That's because there isn't. There's an
evasion stat (mainly for vehicles) that effects chance to
be hit, and a stat often called maneuver that effects chance to perform a breakthrough (i.e. get an extra round of attacks).
- Does the game count the HQ unit itself as contributing to the units size? For instance, does an independent HQ weighing 250 tons need to have 20,250 capacity if you want it to lead elements weighing a combine 20,000 tons? Or does it just need 20,000 ton capacity?
Yes, the HQ element's size is counted by the command rating. No, you don't
need extra capacity, as command bonuses drop off linearly after going over the rating. A 20,000 command rating unit with 20,250 tons receives 98.7654321% of the C.O.'s bonus.
- Is there any downside to armor other than cost?
You mean, to using a more advanced technology (such as High Density Duranium instead of regular Duranium armour) to determine the strength of a ground unit element's armour stat? No.
- Do science teams and logistics units need HQs?
Need? No. Benefit from? Yes (in the usual way).
- There seems to be a bug where stats for units, particularly capabilities, get removed or added without you editing them. Has anyone else experienced this? It might have something to do with using SpaceMaster to instantly make units while I was playing around.
Nope, never seen that. Are the capabilities actually being removed, or are they instead not being displayed (perhaps due to lack of space)? And if you were "playing around" are you sure they were being added or removed without user input? Did you (for example) make arctic warfare infantry, then try to make an arctic warfare vehicle expecting the "arctic warfare" aspect to remain selected? In my experience when you switch to a new element no such 'options' are carried over.
- Do Boarding Troop Compartments unload as quick as Drop Troop Compartments?
Quicker, most likely. Boarding Troop Compartments appear to unload 'instantly' -- at least for the roll. Then 30 seconds per box of armour they need to destroy to get inside, then 60 seconds per round of boarding combat. Drop Troop Compartments take much longer to land ground units on colonies.
- Should take all the FFDs out of my battalions and put them in my Regimental HQ.
Probably not, but if your overall commander has the best Orbital Bombardment Support bonus then yes. Otherwise you probably want them in a specialist FFD unit with your best OBS commander.
- Is there a downside to my support bombardment and AA weapons being static?
Yes; they won't be able to perform breakthroughs. There are many more upsides, however.