I think there are some examples that show the meta is in a rut (95% of Imperial lists making the cut at worlds/regionals including x7 or Palpatine), while there are other outstanding examples (G1As, Scyks, & B-wings in regional winning lists) that say otherwise.
I personally, think that there are a few pieces that make an extreme negative impact, and FFG would be wise to errata them to open the meta wide open again. Palpatine, x7s, and maybe Manaroo should be dealt with in some way to get them back on the power curve.
I don't think we will see anything done with Palpatine though. If they wanted to do something, I think they already would have by now, which is disappointing. He very well may be the nail by which Imperial players forever hang. Manaroo I'm not sure FFG see a serious problem with either (or the player base at large for that matter). With her low PS, at the very least, higher PS large base ships with boost and ways to mod dice after a boost can handle her.
But x7 has been extremely detrimental to Imperial list diversity and the game overall. Once you start getting cards that make a certain ship, regardless of pilot, more cost efficient than every other ship available to that faction regardless of build, there is an issue. The x7 title does this in such a way that I have never seen in the game before. Even in the days of pre-nerf Whisper, at least her support wasn't a solid staple. With x7, list building for imperials competitively goes like this, only varying when the player looks to the change of pace Decimator as the foundation (which usually has Palpatine crew and is often supported by an x7 Defender anyway)-
1.your choice of x7 Defenders
2. maybe a Palp shuttle, or another x7 Defender, or Carnor Jax for the mirror.
3. If for some reason nothing in step 2 fits, Omega Leader or Inquisitor awaits.
Do you remember how strong Crack swarms used to be? They've disappeared as fast as Pokemon Go players thanks to x7. The question is no longer about if x7 is too strong. The question is does the existence of x7 allow for competitive imperial players to field non-x7 lists without placing a major handicap on themselves?
When Veterans came out I described the Imperials has having three 'hubs' for competitive lists - Swarms, Decimators, Aces. I said that Veterans meant Defenders added a fourth hub that hadn't previously existed.
I was wrong - Defenders just took over all previous hubs. Want to play a swarm? Run three Defenders, they're better. Want to play Aces? Run two Defenders and Palp, they're better. Want to run Decimator? Pair it with a Defender.
There's very few exceptions to this. /x7 Defenders are so far off the power curve that they are better than the specialist ships & pilots were in their respective niches. Shameful that this card made it through playtesting.
Edited by Stay On The Leader