Yeah, you are right. It totally slipped my mind that we can just play with SMD too to balance it out. I guess working for 11 hours a day ain't that good for me.
Anyway regarding the other part, I don't think that would be too hard to balance out if we were to tweak the explosion radiuses even at a cost of the middle one being slightly smaller on the ground level if we buffed the damage on the outer sphere. Or even added additional damage radiuses to the explosion if it's possible to have more than just 2.