You're not getting Skubal for Jansen+, Jansen doesn't move the needle all that much for them at catcher and the + would have to be pretty significant.You don't trade the #1 prospect in all of baseball for Tarik Skubal...you trade Jansen + for him if you must.
If management isn't packaging Moreno in an Ohtani deal, I don't know what the expectations are for his return from a Jays fans POV. Skubal is going to be an ace in this league for a long time, he has a great repertoire, 4 more years of control, and he would make a phenomenal 1-2 punch with Manoah.
Here lets play a game, Manoah vs. Skubal this season
fWar: Skubal
ERA: Manoah
xERA: Manoah
FIP: Skubal
xFIP: Skubal
K/9: Skubal
BB/9: Manoah
Manoah is better, I acknowledge that. He gives up much less hard contact and is a year younger but I think management could do a lot worse than using Moreno's value to bolster the rotation for the next several years. Now the one caveat to all of this is that Al Avila is a shockingly bad GM and I would welcome the possibility of using non-Moreno prospects to get that deal done.