It seems to be pretty rare that top 35 prospects get traded, much less trades that start with two of them. I think those days seem to be over for non surefire hall of famers.
While team control is obviously different and that is important, the Soto trades and even the Burnes trade would support the new normal. Those two players are on a different value level than Luzardo and Robert in terms of performance.
Frelick, Uribe, Mitchell, etc have a lot of team control left. No GM is going to survive if they aren't competitive by the team those players are free agents. I get long term thinking but that's pretty extreme.
I could be wrong and these players could be traded for astronomical packages and that's fair. I wouldn't give up Mis or Quero for either of these guys.