@melanol I play random, NOT aeon, so expect a different perspective here.
That being said, since the gun changes, I've found that I get my best results from aeon by upgrading the fire rate on the commander first, not range.
After getting firerate, I can use the range of auroras to push into enemy formations / ACUs, and if they try to close so that their non-aeon T1 units can fight back, they get an early upgraded-commander smashing them up for their troubles.
I know it's in no way a fix for all the potential problems of the race, and while playing random aeon IS my least successful race, so I aren't contesting the opinions of far better players than myself... But I'm just stating what seems to work best for me!
They definitely feel like they work harder for the same results at a low skill level.
I can see the problem in balancing such a faction (if expert-microed aeon were better than the others, then all pros would play aeon), but there's a balance to be established, and I'd love to see faction win rates across different league levels (bronze, silver, gold, platinum, master) that ONLY reflects the most recent patch.
From what I see of the statistics megathread, only 1 pro does best with aeon, and I'm uncertain which patches it reflects.