Loved WandaVision as a whole, but man I did not like how they resolved the Pietro storyline.
Although, I suppose it's still possible there's more to 'Fietro' than we know at this point, I really do hope that's the case.
Likewise. Even if he's not the DOFP/Apoc/DP Peter but a different one, or even a new villain, anything would've been better IMO.
At this point though it would be needlessly convoluted, I think. Was he there before Wanda came to WestView? Is he really Ralph or just playing a role Wanda created, then Agatha highjacked? Did the necklace also give him super speed? (And if it did then WTH is Agatha worried about Wanda for, just make a bunch of those and take over the world/zerg rush her ass with your super speedy minions. She's lived for centuries, pretty sure she could make a decent stockpile) Unless they plan to spend a decent amount of time with Strange and Wanda in WestView if/when they go back for Agatha and explain it, or they really are doing a second season of WandaVision, I think he's just a random dude and that's all.
Wanda is powerful enough to create a hex that controls a town of thousands, can recreate a vibranium synthezoid from nothing, gives birth to super powered twins that age up to preteens in a week, and she did all that unconsciously. (and the next time we see her will be in the *Multiverse* of Madness)
I'm on board with Feige and team recasting every mutant and X-team member, with one for sure exception, Deadpool, and one possible if it could made sense in context, Quicksilver. His MCU counterpart being dead, Wanda's grief of losing loved ones is an uncontrolled trigger for her ridiculous powers, Dr Strange multiverse sequel...yeah, I do not blame anyone for entertaining the thought. And the writers knew a lot of folks would, too.
If they wanted to go there with Peters, they could have, in about the most plausible scenario we're going to get *any* Quicksilver in the MCU.
If they wanted to introduce him as a new villain speedster for Thunderbolts down the line, they could have. And at least we'd still be excited to see where Peters goes from here.
Instead he's a sitcom trope and a dick joke.
I really did enjoy WandaVision as a whole, but this and especially Monica's "sacrifice" line to Wanda in the finale were big misses for me personally.