Right now, the USAF has an untested CONOPS for CCAs.
Increment 1 is to test the CONOPS in the real world. And to see if there's a drone mission that they're missing that really needs to be inside the CCA group. And to see if there's systems that need to be on every drone, like say not just an EOTS for ground navigation but a good IRST.
Increment 2 would then apply the modifications to the CONOPS and verify that they work. And add whatever extra missions and hardware came up in Increment 1.
For example, right now it's looking like Increment 1 is simply some "spear-carriers", drones carrying a couple of AMRAAMs for the manned plane to control. After some flying and wargames, it'd be good to have a TACIT BLUE-type ISR drone.
(guessing here) Then Increment 2 adds a stealthy ISR-and-comms-relay drone with EOTS, a GMTI radar, and the BACN comms node. Now Increment 2 is new "spear-carriers" with a good IRST, and this recon drone. After some flying and live wargames, it'd be good to have an EW drone, and the spear-carrier CCAs would be a lot better with a radar as well as the IRST.
(still guessing) So Increment 3 adds EW drones (recoverable MALD-Js, basically, which may-or-may-not be carried by another plane to their launch point). The Increment 3 "spear-carrier" CCAs now have a good IRST and radar (and carry 4x AMRAAMs each), plus there's recon drones and jammer drones. After some flying and live fire wargames, it'd be nice to have a bomber drone that's a step above a cruise missile that we can reuse if it doesn't get shot down, to get into the outer edges of an A2AD zone and then attack something inside a tougher A2AD bubble.
(still more guessing) So Increment 4 adds a fairly large drone (it needed to carry more than 4x 2000lb bombs or ~24x 500lb bombs the same range as the NGAD, for example). It's got EOTS and a radar that's good for ground-search, because that's needed to drop bombs in all weather. It does not have bays for AAMs. Keep the Increment 3 "spear carrier" CCAs, the Increment 2 "TACIT BLUE" CCAs, and the Increment 3 Growler/MALD-Js (whichever size they end up).
At the end of Increment 4 and going into Increment 5, we have enough CCAs in support that you could make one Manned NGAD the lead for an entire strike package.
And somewhere between Increment 4 and 5, someone is going to say, "how much to make the spear carrier CCAs capable dogfighters?"