holy ****, that is a crazy good off/def type player, thats awesome! i kinda like that happened, its the one cool thing about the population being so low. its also the green lp/per hitting big that makes it happen, which is cool, but its also a calculated risk - which is usually how they slip through. but man, that defense is incredible! i am very much of the mindset that all it takes to win championships is 2 core strengths (off, def, reb, guard skills) per player, talent beyond that is nice but largely superfluous. so i don't mind his crap reb / pass, even though it means he's not a natural sg or sf or anything else.
the only thing i actually care about is the stamina, if he was +20 stamina it would make him soooo much better. that may sound weird when hes already amazing, but the law of the diminishing returns in this game implies that elite players usually can't get much better adding core ratings. this guy could, with reb and pass, because he hasn't maxed those abilities out, either of which would be a core (with more pass, hes a sg, with more reb, hes a sf - or a swing between both?). but in the off/def areas, adding 20 ratings is basically 100% worthless. you could take 20, even 40 away without making a dent.
on the flip side, there are no situation where you experience greatly reduced returns on stamina for your best players (assuming you have best players, if you say well my best player is an awful freshman, or my 10th best player would be a top 3 player on any other top 5 team, then this doesn't really apply). the reason is, there is no point where stamina stops increasing the minutes a starter can play. for top players, there is pretty much always a significant gap between their minutes and the guy who is playing less because of it (which is often the worst player of the bunch, like of the guards, or bigs - assuming you are doing the work to set your rotation up right, not just running straight 10 man all the time).
in short - stamina is by far the most valuable marginal rating for this guy, its not even close - and that is true for almost all elite players.