Just my 2 cents, I’ve said it elsewhere, but why not here too
It should have ended with Zodiark as the final boss, or the second to last boss, with Fandaniel as the final last-last Ascian enemy.
No Ultima Thule/Meteon/Bill and Ted nonsense.
I mean, there was a huge lost opportunity to have a “dark side of the moon” zone, or even the moon interior a la FF4.
The “sound” should have been a huge mystery leading up to 7.0 with a very fleshed out NOT THE ASCIANS problem we would have to deal with.
If anything, the themes of this should have been finally being done with the ascians and trying to reconcile with the Garleans and “what comes next”, with some crazy cosmic horror necessitating the unified power of everyone on the planet.
My biggest disappointment was in the mysterious sound (and ultimately the entire plot of the game to now) being the result of..essentially a glitch.. and the forced events to make that whole time travel men-in-black nonsense even happen.
“Oops, made a mistake, guess we gotta sacrifice everybody to protect ourselves instead of building something to destroy it”
instead of
“Ancient evil from beyond has found us, the only thing we can do is try to hide from it to buy time to figure out how to beat it”
They even had the parts there: imagine an entity utterly immune to aether/Magic and extremely powerful towards Aetheric beings. We have the Garleans, a pet project of the Ascians who are essentially low/lacking in aether. Who knows how many eons it took to evolve such a race, but they would have been a perfect technological society to battle such a creature, no?
All that said, taken outside of the plot as a whole I did very much enjoy a lot of parts of EW…but all together…not so much.
Edit: Alternatively, just lift parts of Chrono Trigger entirely. Cosmic horror (Lavos) deep inside the planet. Uh oh, ya'll broke the thing that was keeping it asleep...