Hey, i join this discussion a bit late, and don't even know if this is the right place to post that but here i go :
Building upgrades : (when multiple choices, you can only choose one and stick with it on the world)
Yard :
- Repair upgrade : decrease the time to repair base
- Move upgrade : decrease the move recovery time
- Capacity upgrade : increase the amount of building-slot in your base (so you can have more than 40)
Command Center :
- Range upgrade : increase the attack range (so you can attack further than 10 fields)
- CP upgrade : decrease the cost of cp to attack
- Capacity upgrade : increase the unit-slots in offense (so you can have more than 200)
- CP Production upgrade : increase the CP production speed (well, maybe 20/h instead of 10/h)
Defense HQ :
- Capacity upgrade : increase the unit-slots in defense (so you can have more than 300)
Defense Facility :
- Repair upgrade : increase the repair effectiveness of defense
Supports :
- Range upgrade : increase support range
Also, i'd love to see a new building :
Trade Center : You can transfer from/to a base of your own only when it has this building. The transfer cost now depends on the levels of trade centers at both ends of the transfer (instead of the distance of the base). You can transfer from/to a base under attack. If the trade center is damaged, you can't transfer anymore from/to this base.
Also, these new supplies could be fun to use :
Shield : when you deploy the crate on a base, this base is put under a shield during 1 hour.
Base repair : you can deploy this crate on a damaged base to instantly add a specific amount of repair time (you could deploy it on a fully repaired base, but you would be an idiot ^^). The amount of repair time would depends on the grade, just like resource crates.