Part of me also thinks Gobert can be a double-double player and also lead the league in blocks--the kind of guy you start and give heavy minutes to. Keeping him and Favors would still give us a twin-tower effect and then some. Moving a big for a pick (especially in this draft) could land us a player like Andrew Harrison to go along with Parker, and we might still be able to get a solid back-up caliber big later in the draft (GSW pick) or through free agency if/when we decide extending Kanter for big money may not be our best play longer term.
A core 4 of Harrison, Hayward, Parker and Favors, backed by Gobert looks awfully solid to me.
I really like Kanter, and I get the bird in the hand thing. I'm just saying an aggressive GM might be open to aiming higher in this upcoming draft. At some point, there just aren't enough minutes, dollars and shots to go around.
Look at Detroit who isn't expected to offer an extension to Greg Monroe. They'll probably keep him as an RFA, but they're not committing.