There’s a couple of layers to this admittedly.
I believe the change being minimal is meant to deliberately reference Hot Rod becoming Rodimus, and all he gets primarily is wrinkles in Robot Mode.
Even her Vehicle Mode evokes the space Winnebago by being her motorcycle form with a trailer attached to evoke a jet.
Elita upgrading into a space plane might a reference to her Power of the Primes toy.
To complain she’s drawn as spindly is absurd when artists in the series have drawn her more muscular looking.
The problem is it’s not as consistent, but having her more buff like on the right would probably be seen as preferable from both certain factions views and for toy purposes.
Arcee Magnus is also drawn fairly buff and chunky so I feel like certain factions are splitting hairs just to complain Arcee and Elita aren’t stock side shaved lesbian coded MOTU: R Teela for some reason.
I’m not really sure what you can do about the pink colorations. Both characters were designed to be pink. Elita has been experimented with more maroon colors before, but she’s still predominantly pink even in IDW.
They tried making Arcee blue in Prime, but that ultimately didn’t stick and made her more like Chromia to me. That’s not bad exactly but it’s always been more “Huh why didn’t they just stick with Chromia over Arcee. Heck Firestar could work well here too for Jack.”
I think the one thing people aren’t grasping is in an era where Hasbro is pretty insistent, post 80’s movie, the Prime lineage begins and ends with Optimus, that the Matrix going to somebody else and making them Prime is a rather ballsy move.
We finally get another non Optimus … er Prime after Rodimus (and the one time they experimented with Optimal Optimus Primal), and just like in 1986, fans lost their collective minds and booed, hissed and threw furniture ala the Peter Griffin meme.
So all it winds up proving is when fans say they want a new Prime, they’re lying. Optimus could’ve passed on the Matrix to Cliffjumper and people would still react poorly.
Now granted some of the outrage is stock “Stronk Wah-Man” rhetoric, but funny enough, people didn’t do this to Arcee Magnus. Most of the complaints were more rational in that we never got to see what she had to go through to upgrade into a Magnus. People are much more onboard with Arcee but Magnus isn’t as intrusive as a rank (nor is it consistently depicted as one).
I stand by people would’ve been much more angry and openly celebrated IDW had they depicted its grouchy Elita and Pyra Magna as stealing the Matrix from Optimus there and evolving into a Prime. That certain writers never did that with Pyra specifically is honestly impressive restraint because you know somebody would’ve tried that.
Not to mention, Elita was functionally a Prime being the leader of her colony, and she turned into a truck there (albeit maybe due to artist error since her concept art is a space car), so hmm. Halfway there.
Still Skybound Elita is going to be a poked hornets nest no matter what. The staff have strongly suggested her getting the Matrix is setting her up for a big (presumably partly humbling) fall. Perhaps proving Optimus, despite it all, was making the better calls in the end. We also have Hot Rod on Cybertron now, and with Kirkman liking Rodimus, the chain of succession could be Optimus to Elita to Rodimus here if things go a certain direction.
Plus, Optimus tends to get Re-Primed anyway, so anyone still cranky about Elita or Rodimus pry have little to worry about.
The problem instead might be how they approach an Elita Prime outside of Skybound, but fan reactions are only justifying the ludicrous “Apology Tour” Hasbro is currently doing with the 86 movie…