I just though a little bit more into my above idea; That would be a different direction completely to encourage map flow and domination, barring random weapon spawns. Movement based AA's like jetpack would cost more to use, whilst things like camo are completely context sensitive when it comes to how much energy it takes. The spawn timer on the energy packs would be just enough so that it would be hard to lock down the spawns completely.
PP would be way OP if you could spawn with it IMO. Spawn with noob combo? Yeah no.
See I kind of thought Health Pack "kiosks" would be serve this sort of function when I first heard they were back in Reach. You know, keep control of certain areas of the map to consistently refill your health at the kiosks sort of like you would hold down advantageous routes/paths/etc.. of a map or power weapon spawns. Health packs don't seem to do this at all.. in fact most people can't tell you where any of them are on many of the maps anyways. People are used to running and gunning for the enemy, dying, respawing, repeating.
I also thought that we'd be able to place the ammo cache's you see in FF around on custom maps that would refill all UNSC weapons that could serve the same purpose. This idea was never realized anyways, so it doesn't matter.
With your idea (which I do like btw) this could serve a similar purpose. With some sort of recharge station you had to stand by for 2-3 seconds to recharge completely (or deal with a slooooow recharge otherwise), it could help more teamwork oriented teams gain an advantage over a lesser coordinated opponent. Of course, like you guys mentioned, "orbs" of some kind placed around the map like power weapons or OS/Camo could also be a great option. Certainly we won't see the unlimited use of these AA's from the start.
There is one thing that might come into play on these though... they mentioned modifications which will likely tie to weapons, they could affect AA's as well. i.e. "X-ray vision Pro - lasts 3 seconds longer, recharges 3 seconds faster" etc... which could affect the above mentioned possibilities.
Anyone think there will be a "prestige" type mode or do you think after a couple weeks/months everyone will have all the guns, AA's, gameplay affecting armor, etc?