I suggest reducing the rate of fire of the main gun a bit while leaving its accuracy.
You mean accuracy vs infantry (scatter), or accuracy vs vehicles (scatter)?
Both the AEC and the Puma has pretty bad moving accuracy (50% multiplier). For the AEC, the scatter changes we did mean that the main gun is now almost useless vs infantry (unless you walk up to an MG/are shooting a garrison), while giving you a higher chance of hitting enemy vehicles.
Nerfing the rate of fire will affect the ability of the AEC to engage vehicles (which don't die in one shot), while not helping much vs random wipes (i.e., AEC edging out of the corner, killing a few models).
Instead buff the front and Coax-MGs
We could definitely do that. However, this means that people might continue always going for the AEC, and it's also that the AEC can come out very early & get spammed.
Do note that we had UC changes that were meant to accompany AEC changes, but not anymore, now that they got reverted :/
Would it help if we reworked AEC timing to make it feel more like a panic-puma thing, rather than a generalist LV?