Well I guess it would occur in lower leagues, where 18 year-olds play more frequently than in higher leagues. This might be a little bit off topic, but they could also have things like 6th man, and most improved (stats).
i think bbalin argument is the really problematic here, since not many player would compete for it in many leagues.
And also the other award, are a bit weird. i don't like the 6th men award in reality, since it is usually won by starter who get subbed in the first or second break in the game ... But in BB every "6th men" would have several starts(close to the amount of start of the starters), for the game shape, or not significant minutes besides blowouts.
And the MIP, maybe possible and probadly not so hard to implement like the other one since you really could look at a number comparisions. But on the other hand, this award will most likely go, to a player who moved into the rotation maybe because, the team removed deepth at the big position in exchange for an extra guard etc. This roster change may come through his better abilities, but i think in many cases it is just an tactical change.