Board Thread:Off-Topic/@comment-71.177.237.8-20140609234706/@comment-24686081-20140611185357

Rebuy/selling the pop and awe ability is very good for stunning ALL the bloons ( even the MOAB - classes) on the screen, and let your other towers do a lot of popping power.

Plus, in BTD4, there was no burny stuff (was there? I can't remember) for the mortar, which is a quite cheap way to pop grouped bloons.