I'd be interested to hear from anyone who has playtested the ships at -1 Mod and -1 Elite.
For an E-Wing, the addition of a Systems slot would help make up for the loss of an Elite slot. I could see this working.
However, I do like that HotAC focuses on the "old school" ships. It gives them a chance to shine, whereas in competitive play they tend to be overshadowed by newer, better ships.