Not all college players are as old as Wigginton is. If he stays at ISU, any gains made in his game may be offset by being a year older as far as the NBA is concerned, so his draft stock may not increase any more than this year. Playing in the G league will improve his game as much as if not more than at ISU.
I can see a case for both. Him leaving is not an unreasonable decision, but I am not sure it is the optimal one if his goal was truly to be the first Nova Scotian playing in the NBA.
If he stays, he has a ton of “upside risk.” If he stays, comes back 100% healthy and even more springy than before, becomes an absolute force of nature on offense (e.g., 22+ PPG with an offensive rating in the high 110s, usage in the high 20s/30+, hits as much as a Tyrus range of 45% from 3PT, basically a rich man’s Marial Shayok, if you can imagine that, of volume and efficiency), and shows some significant growth on defense and playing point guard, he could have ended up in a very good spot come next spring. He did not even have to be the primary PG, either, but just show some real growth about his decision-making, creation for others, and avoiding stupid turnovers. That guy as the leader and best player on what could be a surprising team next year plus some noise in March to raise his profile, and the guy could have found himself a late first-rounder picked by a good team (though with a cap crunch on it) looking for cheap reinforcements that can contribute *right now* rather than stashing somebody for development in the D-League for a few years later.
However, if that brilliant strategy does not survive first contact with the enemy, then LW just ends up a year older and a year poorer for not having gotten paid that one year. The decision to go pro now probably raises his “floor” of earnings but lowers his “ceiling” if he can take a “shortcut” to the NBA by having a behemoth of a junior season in college, and any path to the NBA is now going to be a grind from the bottom (as Naz and Deonte) as opposed to a path carved out for him, like Talen is likely going to have.
I wish him luck and I wish him well.
It must not have been an easy decision, and I hope he made the right one.