What if Mahomes fails as an NFL QB?

[TLO]

I know this isn't something that's pleasant to think about, but I'm curious as to what this franchise would do if Mahomes turns out to be a bust.

Do you think we draft another QB in the first round? Or do we go full CHEFUS and sign a middle of the road Alex Smith type again?

Ideally Mahomes is the QB here for 15 years on his way to multiple SuperBowl titles and the Hall of Fame. That's the dream, anyway.