Use gravycat's vehicles and weps. Try to add special items and vehicles to points which will be available to a team when it captures the point.
for the love of god no. Gravity Cat's weapons and vehicles for the most part are simply not good.
if you really want to improve it you should:
make ground vehicles actually viable
Remove the RANGE RESTRICTION on artillery
Redo the bases to make them larger and to have multiple spread out spawn rooms. The current 1 spawn room is a clusterforget.
Remove syringes entirely.
R-E-M-O-V-E the TT Rocket and Grenade launchers entirely.
change to a control points map, with progression, similar to TF2. Literally, the gameplay is people sitting at their bases with a few people abusing the stunt plane's landing and explosives, with a snowspeeder running interference.
The military base where the fighter Jet used to spawn is a good example
Additional add-on's
Rally's explosives(satchel charge, trip mine). These are balanced explosives.
Stratofortresse's MRLS
Either the Technical jeep or the Puma(NON AA) version. Far better add ons than the BTR
A modified version of Bushido's combat bomber and biplane. Better more balanced air combat, they just need work on the handling characteristics, and the bomber needs a redo on it's bomb projectile.
Potentially Strato's Abrams. If you're going to use a spread out map, the high quality 1 person tank that this is works great.
Army's SEARAM turret. Think a turret that shoots Javilins, but have it hidden to where it can't shread ground targets from range, only air