I get the impression that neither side is unhappy with the partnership, but neither side is 100% committed. I'd agree that Hardy likely wants a more skilled big and I'd add that Kessler seems to take tanking/losing harder than most. While it's true that this preserves future cap space, I think the real door they're leaving open is a mid-season trade.
I'll play along. My favorite, dumb trade concept is LeBron to Miami. Lakers are building around Luka and know they can't win the west right now and LeBron's best chance to win a ring is in the East. Lakers get future MIA picks for LeBron, MIA goes all in as this is Riley's best/last shot. Future MIA picks could be considered the premium assets that I'd want for Kessler.