I've been a compulsive player and I want to contribute.
So I came up with idea of tower.
I call it Artillery.
It will be Metropolis drop compatible with all types.
Just in start it will have range of 4 fields. But it will be +1 range per 6 level. In addition it will have splash damage. Creeps in 3 range will revive 45% splash damage.
Special: Auto Mode.
10% chance that cannon can get into auto mode and shoots up to 3 shots in random direction in whole map.
+0.5% per level.