Well i like the mechanics of AA guns as they are now, i do not think it would make sense to let them attack along the same reasons that aircraft cannot land in a newly conquered territory.
I do believe 5 is too much, but 3 i think would be too low.
4 would be a better option OR keep them at 5 and let them roll up to 4 AA dice instead of 3.
Cruisers are second only to AA guns when it comes to rarely ever being bought and there being very few situations where one would buy one.
And this flies in the face of WWII naval warfare.
However i do not think the price should be lowered to 11, rather give them a second ability.
BBs and CVs both have 2 abilities, DD and SS only have one but they are cheap.
Let cruisers move 3 spaces regardless of naval bases (they would never move 4), or give them AA dice, or let them conduct ASW as DDs do now.
I think tanks are just right at 6 and i see plenty of pro players purchasing them in league and tournament games. At 5 they were be OP and over purchased.
I do find it hilarious that the OP bought a bunch of tanks right after starting a thread “TANKS ARE STILL DEAD RAWRR!”
And to the guy spamming mech inf, that is a horrible strat in so many ways :P