Rubio should be traded for anything aside from a multi-year contract(s). More so due to fit than talent (Burks as well).
I'm not too familiar with our current/future cap situation but a small-market franchise can't afford to miss out on the (legitimately possible) potential to add a talent, despite the immense financial risk, of J.Parker's caliber for purely cap space due to any contract(s) outside of DM/Gobert's.
Favors should also go for any long-term asset (if possible). I'd prefer he stayed as our reasonably priced 3rd big man but that's unlikely & not worth risking the possibility of adding an additional future asset.
Hood, as well as Exum (& even Ingles to a much lesser extent), should only be moved if it brings that missing "3rd piece". Which also seems unlikely. Exum & Hood have enough potential, youth, fit, reason to believe they'll be affordable, etc to justify potentially losing them to RFA. (Don't overpay for either)
Ingles is our "James Posey" (championship caliber 5th/6th man), reasonably priced long-term, provides (necessary) elite outside shooting, &, mentality-wise, aligns perfectly with Snyder, Mitchell, Gobert/team culture. He is part of the long-term core IMO (barring packaging him for a star).
Mitchell & Gobert are 2/3 of a championship caliber foundation, QS is a championship caliber coach, & Ingles is championship caliber supporting player. We also have a young duo potentially capable of eventually attracting high-end talent.
But if we're going to have a shot at eventually winning a title, we can't afford to miss out any potential opportunities(/not increase our odds as much as possible) to find that necessary 3rd star. All other (future) supporting pieces can be addressed down the road.
IMO this team has a very legitimate opportunity to win a title(s) in the future but only if we maximize all non-longterm core assets & create a culture that attracts/retains top-tier talent (as much as possible).