I've been hyping up Mason Plumlee since early on in College, he'd be ideal to play with Morris brothers and even alongside Len/Plumlee (for defensive purposes). I saw Gortat like talent in him, though he never developed perimeter game ala Gortat midrange game.
Favors is another of up and comers that Jazz not be sold on, Sanders, Millsap w/ only 1 year on contract, Amir Johnson same as Millsap, Jordan Hill, Faried, Gibson, Splitter, etc. - Drummond, Ibaka, Horford, DeAndre Jordan, (if want proven) or not there yet: Nerlens Noel, Steven Adams, Gorgui Dieng, Rudy Gobert, Lucas Nogueira... IMO, Suns need to find a soon to be star/semi-star; solid w/ upside, that takes it to another level aka Gortat, Dragic, Bledsoe, Finley, Diaw, Green, Miles Plumlee, so and so on - rather than just Top-10 talent.
I armchair GM'd every one of those Suns players or former and they all exceeded expectations; and I've stroken out as well lol (Terrence Williams, Earl Clark, plenty more) but it's not as easy to Trade scraps for Star. Not one of the listed Suns were highly regarded before arrival and w/ as many mistakes as I've had lol - McDonough is money.