X7 and TIE/D are not auto-include. Neither is chardaan or tie shuttle. I think FFG has a handle on the problem. "Fixes" can hit from multiple directions and pull a ship into multiple roles. As long as that remains true it is better than errata.
I actually particularly like how the TIE Defender was handled. The thing was JUNK before, so any 'fix' involving a title would just be an auto-included title.
Which sucks. For example, compare the TIE/x1 "fix"...yes, it was needed, but...geez, "auto include" cards are so **** boring...
I'd like to thing FFG learned from that one, though, and the Defender fix is INCREDIBLY solid - yes, pulling a title is an auto-include decision (with the exception, arguably, of Brath who does so love his HLC), but it's not a case where you are locked into one card. IE., "oh, I'm flying a TIE Advanced today, guess I need to get my 'x1' ticket punched so I'm allowed to meaningfully fly the fighter".
That's nice. If a fix is needed, introducing it in such a way (possibly with multiple choices) that it IS NOT an auto-include...
Nice!