The Padres have already announced they're open to moving King and Cease.
Either one of them would be better than Gil.
And if they Padres are willing to move those guys, why not Tatis?
Gil and prospects for Tatis is a move I would be all over. And I would do it before the shine on Gil wears off.
Even if the Padres were in a situation where they wanted to purge the roster (which I don't think they're gonna do because they think they're good enough to compete), King and Cease are rentals who will go to the highest bidder next winter. I'm not opposed to signing them, but the Yankees will counter by telling you they paid Cole, Fried and Rodon ridiculous amounts of money. If the Yankees are this incapable of developing and maintaining young controllable players, let alone pitchers, they're not winning anyway, but you're funneling so much money into something that really isn't their problem.
As for Tatis, I like Tatis. I'm not trading Dominguez for him and that's where the conversation will start with them and rightfully so. There's only maybe 4-5 players I'd give up Dominguez for at this point and Tatis ain't one of them (on top of that, where's he playing?). I get it. The Padres 2-3 years ago built a team we would have loved, but if the Yankees feel like cutting corners, the best way to do it is by developing players on the cheap since clearly the Yankees aren't gonna have a $370 mil payroll of their own, which a trade like this would do.