Just thinking.. Why not have 2 vehicles for each team at the spawn?
One is a speeder and other is a mech and there is only one each of them which spawns at a time. the lucky player which gets it first can strike fear into the other players. And since there is only one, they cannot go rambo style and own every living thing that moves or capture every single base, but will be helpful in defense and attack. and when destroyed, another player will have a chance to capture it for themselves.
((enemies cannot capture enemy vehicles))
I think it would be fun and a nice little change.
((you must exit speeder to capture base))
__________________
Hmph..
What are you looking at?
(Squadron Commander Chris Steele)