The only player on this roster that is still questionable is Brogdon, since he plays the same position as Scoot/Sharpe. They tried trading him at the deadline and couldn't find a deal they liked, but then sat him for the second half anyways so Scoot could play 35MPG. Grant isn't blocking the development of any prospects. How good did Kris Murray look starting the second half of the season? Would it have been more helpful for him to play 30+ mpg the whole season? I don't know, but probably not marginally better. I don't really see a problem with either right now.
Truthfully, until Portland has a player that shows all-star or all-nba potential, there is no comparison to any other team that makes sense. Scoot and Sharpe have the best shot, although I wouldn't bet on either. The team tried to put them in position this season. Sharpe was playing 40MPG for a stretch and the second half of the season was almost all Scoot development. It's unfortunate both were injured for much of the season.