We don't know anything about a wave 9 or 9.5. Heck, we don't even know if there's an 8.5! So I'd suspect playerbase ignorance more than FFG idiocy.
An Aces pack with X-wing and E-wing would be lovely. Throw in Integrated Astromechs, a couple titles or whatever, and hopefully some new shiny 1-2pt Astromech generics, because neither ship really benefits from the current crop - R2 is exactly as (not very) powerful on both of them, and R5 on an E-wing? C'mon, no.
Well exactly. My assumption that IA isn't the only X-wing fix is a 'blank space' assumption. What hasn't been done yet (X-wing Title, E-wing fix, another Aces pack), as opposed to what has explicitly been said.