I agree with you about most things. Neville had the advantage of sufficient funding and a forward thinking CEO/Board.
However, Saw is a smart guy, and he has the experience (and financial backing from Marcelo/Son) that Sprint needs now for its work with high frequencies for backhaul and densification.
Remember, Saw worked under the prior Sprint network guys who were fired by Marcelo back in March 2014:
Now it's Saw's show, and Marcelo/Son wouldn't have kept him if they didn't have confidence in him.
Also, Dan Hesse wanted to buy MetroPCS. The Board wouldn't let him.