This is what happens when people get buried in their own over-analysis.
Brown & Tatum have shown every indication that they want to win, and would be on board with at least a couple years of title contention playing key roles, even if everyone can't score 20 every night. Teams like GS, HOU, TOR all scored 5-10 points more every night that us this year, no reason we can't get to that level which means more for everyone.
Morris and Semi played over 40MPG this year, and as great as their playoff roles have been, are totally expendable in the regular season vs Brown, Tatum and Hayward.
Not everyone is going to be healthy.
Hayward will be brought back slowly.
Irving will be brought back slowly.
Guys will get rest nights off.
Tatum, Brown, Hayward will all have opportunities to play the "4" at times.
Smart may not return.
TL;DR; trading away stars 'cause we have too many is pretty dumb.