Leave Level 1 Fighter/Bomber. Merge Level 2 and 3.
Reasoning (What will this fix?):
Only having fighters and bombers in level 1 adds a lot of thinking to be done very quickly. Many people complain that the Rebels get to places faster, then do the speed upgrade that the Empire has! once that's done you'll be evenly matched, and you can build more units faster. Level 1 is all about micro management of forces and credits, it discerns good players from great players. I find i never go past level 2 in EAW unless I am messing with someone. Level 3 takes a while to get too and all you get in a small hero, and a HVG or IG which doesn't really matter since Nebs or Acc's do they job just as well. Meaning if you have the money and Security to upgrade you have the time to build enough Acc's to win the Battle.
Current Perceived Imbalance (What is the current scenario of imbalance):
There is no fighter imbalance in Level 1, only a bunch of noobs who don't know how to play and want to complain. 2 and 3 need to be combined because transitioning to Level 3 is slow and pointless.