I would like to suggest that just because you get overwhelmed by a specific technology, in a match or group of matches, DOES NOT MEAN that this technology should be removed from the mode. It means that players have to adapt. It does not mean imbalance, it means change of view point, change of tactics.

For instance, at one time, the heavies were being killed by Douvolle TAC AR's. The complaining was huge and CCP nerfed the TAC ARs. Now the TAC ARs are worthless (and expensive for noobs to find out they are of no use).

Then, players began spamming tanks and were over running infantry, but then drop ship pilots figured out the tactic of how to stack ROF and began thinning out tanks so that infantry had a chance, but then tankers complained and now drop ships are almost worthless. The tankers could have learned (and some did) how to ditch and hide from drop ships.

Some heavies figured out that they could zoom up in an LAV and commit an execution and zoom on to another location. I hated it, but I started getting AV grenades for defense. But due to whiners, instead of changing tactics, now LAVs are almost worthless and have been eliminated from Ambush all together.

I believe the absence of vehicles in Ambush has made it just plain boring.

Why take out every vehicle from Ambush? You made the LAV weak, isn't that enough?
Vehicles add so much to the surprise factor that keeps the game entertaining. Enemies can arrive on the opposite side of the field rather quickly, and sometimes they are like the cavalry coming to the aid of team mates who are pinned down.

The 'two vehicle per team' limit was already an extreme action, but then the complete elimination of vehicles from Ambush has made it the most boring mode to play (IMHO).

I would like to suggest that you put LAVs back into Ambush. If you don't like tankers, and drop ships, so be it, but don't take away all forms of transportation from Ambush.

I strongly suggest that you could have unlimited LAVs in Ambush and it would not create an imbalance. In fact, now that you made LAVs weak and worthless, the AV guys would have a party in Ambush with the guys that drop LAVs. But at least vehicle activity could continue in somewhat open use. The LAV droppers won't know when they will face heavy AV opposition, but at least there is hope for the guy that has to walk his butt from across the map to where the action is.