Capping the number of 3-point attempts per game is interesting. I'll have to think about it a little more.
My solution for all the crazy 3-point shooting in the NBA and college hoops:
In the NBA, allow 3-point attempts only in the first quarter and fourth quarter.
In college, allow 3-point attempts only in the first 10 minutes and last 10 minutes of the game.
Naturally, this would drastically lower the number of 3-pointers taken during the course of the game. More importantly, it would increase the necessity of excellent medium-range shooters (i.e., Mark Price) and big men muscling down low in the paint again.
I'd love to see the G-League and a couple lower D1 leagues experiment with these rules.