I see our "young guys" as follows. These players I think may not be all that young, but can continue to improve.
Porzingis - 20, has to improve his strength and consistency with his moves on offense, could be a franchise player.
Grant - 23, has to improve his decision making and jumpshot, could be a solid backup point guard.
D-Will - 24, can still continue to improve his jumpshot. Doesn't always make the right shot selection choice and over relies on blowing by opponents off the dribble. A jumper would go a long way for him.
Galloway - 24, has to improve his jumpshot, and stick to simple ways to attack, catch and shoot or drives to the basket. Less ballhandling/PG style creating.
Early - 24, with the injury this year don't know what he can do well or not well right now. Maybe a wise idea to give him another crack in the summer league, sign him to a non-guaranteed 1 year deal and let him earn a spot in training camp. Would be smart to give him some minutes right now.
Others who likely play next season:
Wroten - 22, has to get healthy. After that, from what I've seen, he has to improve his decision making with the ball. Interesting to see what he looks like in the Triangle.
Hernangomez - 21, looks strong inside and a strong body, don't really know if his skill will translate to the NBA level. We'll see next year.
If Rambis cares about what the vets told him and wants to give the young guys a chance. New rotation
Lopez/Porzingis
Porzingis/Williams
Melo/Early
Galloway/Vujacic
Calderon/Grant
DNP Seraphin, Lou, Afflalo
May lose all but 1 or 2 of the remaining games, but it's worth it. We hit a decent competitive figure of wins with 30 already. At this point 33 wins or 31 wins won't make a difference to a free agent. It's the right time to take a look at players like Galloway, Early, Grant a little deeper to see what they could realistically give you next season.