If some of the guys like Meidroth, Vargas, Sosa, Quero and Baldwin don't turn into (at least) average, 2 bWAR players, if Colson and Teel don't grow into 4+ bWAR dudes, if they can't develop a couple of 3+ bWAR starting pitchers, then what are we even doing? All I'm describing is natural development. Sure, Colson may play a full season and put up 2.5 WAR. That would be a step back. But imagining that nobody's going to improve beyond replacement level just seems unrealistic.
I think this team is roughly a 75+ win team at this point. If the kids continue to develop, as you noted, if some of these young arms become effective or find some success quickly, a .500 record wouldn't surprise me.