Eh, I think its really only the banshee bomb that is a big problem. I remember the H3 banshee actually shot plasma bolts from time to time. Amazing, right?
The problem last night was that temptations has far too much cover and the banshee is OP on maps like this, whereas on something like Hemo, its fine. DMR fire will bring it down.
Honestly, I think the weapon balance between the banshee and infantry was perfect in H2 and H3. In H3 the banshee was fast, maneuverable, and very balanced with the lock on rockets and some team BR fire. In Halo 3 the banshee got a big buff, but we also added Power Drain, Plasma Pistol, Missle Pod, and Laser. Some concentrated fire could scare it off.
Hell, even in CE it was fine. On Halo PC I used to do what I called the banshee rodeo, where I would get an optional plasma rifle, and a shotgun, and keep dodging its splatters like shotgunning. It would take like 3-4 shots to bring it down.
But in Reach it feels terrible. The banshee is either weak as hell, or too powerful depending on the map. The vehicle health model makes it feel like paper mache on Hemo, and on Temptation and to an extent Paradiso, it feels like a monster with that banshee bomb.
I don't really like Vehicle balance in Reach at all anyway.
But I agree with Halo 2 balance the most. We only needed rockets, and we even had those rocket ammo cases around (bring those baaaaack) And some BR fire could scare it away. Halo 3 was balanced but only because they added a fuckton of anti-vehicle weaponry.