Bouncing Projectiles

I think it'd be a fun idea to allow projectiles to bounce off terrain instead of dissipating and doing nothing else. It would probably have pretty good synergy with lesser/greater multiple projectiles, pierce, and fork.

Allowing a projectile to initially pierce through a group of mobs and into the frost wall you just placed down and bounce off of it to hit them again. You could even catch them in a hallway or on the edge of the map(when used with frost wall) and have it bounce multiple times with higher levels of the bouncing gem.

Another use could be to throw the wall behind you and fire your skill at the wall to get an even wider spread(if needed) with multiple projectiles.

I'm not 100% sure if this is an original idea but I haven't heard it before. What do you guys think?