This would probably only work in TC mode...
But imo, make the partisans more expensive and dont change anything about them. Except have some TC bases have static AA defenses that a player has to use.
Means you have to pay more for mobile AA, and the static AA defenses cant be used against mechs in the field as partisans are being used.
Important part in bold. If they are AI controled jets will become pointless at attacking bases. If you have ever flown on mirage, you know how horrible it is flying around having 4+ turrets all locking onto you blowing you out of the sky.
Player controlled AA turrets I could live with, but far far harder to implement into the game. We can only sit and wait 
I never played crysis warhead multiplayer, but Battlefield 1942 had flak guns that only players can use, so it cant be all that hard to impliment... right? :/
This has the potential to make the slow moving AA platforms obsolete, so we have to be careful here, but personally I see this as a very good thing as long as we have 3 things;
1: It costs around 20K to spawn a player controlled AA turret (nothing for free please).
2: AA turrets should never be as effective as an AA platform (so at maximum of 2UAC2s per turret, for example).
3: Killing the AA turret kills the player (not remote controlled from a BA bunker, but something you have to enter to use).
There's no reason why the AA turret, if limited in firepower, should not be able to suppress enemy ground forces, and mow BA down too, it shouldn't be like a player controlled Calliope, just a couple of AA guns with some armour and the ability to auto-purchase ammo while within the turret.
On the Partisan; it's an 80ton tank (an Assault tank, it's the same weight as an Awesome!). It should have just slightly less armour than a Demolisher, and should cost around 70-80K...however, we only have the RAC Harasser as early AA currently (and it's pretty awful at that job due to hover-bob when stationary) so the Partisan has downgraded armour and a reduced price-tag to fill that required role.
Ultimately, when we have whatever medium tank doing the early-game AA (my call would be a cheap 3AC5 or 3UAC2 Schrek, with plenty of ammo for a ~45K AA platform..with the 3PPC Schrek prime being around 60K..as we have this model already and IIRC it was an asset that was in-game pre-Beta release.....but the Schrek is another Assault tank, so maybe the Bulldog or Manticore would be a much better choice?) then we will see the Partisan given more armour and it's true role as the end-game Inner Sphere AA platform.