@comradestryker If the complaint is that getting T2 upgrade and T2 PD costs too much to counter an Aeon guncom, then I'd have thought the solution is to make the T2 route slightly cheaper, not Aeon guncom more expensive. After all the T2 upgrade route has the exact same issue against every other faction's guncom (the main difference is there is no 'counter guncom by getting the exact same thing' when against Aeon guncom).
What about making T2 PD slightly cheaper and combining with a buff to MML? I.e. the idea being you improve the counter to guncom, and the counter to that counter, to hopefully create slightly more dynamic gameplay, rather than just nerfing Aeon gun (which is already more expensive than the other upgrades)