I honestly think given where we're at we need to do both. We need to get someone with more potential than anyone else on the roster in the draft and we should be willing to take a huge swing on a guy like Zion.
If we can get a FRP from a trade or trades of Ant, Jerami and/or Timelord then we should be willing to trade that pick, the worst of our 2029 FRPs and Ayton to the Pels for Zion. We should sit Zion for the rest of the season, trying to get him with the best expert opinions, then therapy and training to try and insure that he doesn't pull/strain upper leg muscles again.
A rotation of Scoot, Shaedon, Flagg or Bailey, Zion, Clingan, Deni, Tou, a new small ball C and a backup PG would be vying for the playoffs next season with a decade of time to age into the prime's of the rotation players and become a contender.