The idea of doing a set of Bandit towers with the look of improvised, based on the Murloc's Hut is a rather nice once. But those buildings hold a very small level of detail. The objects you add in the upgrades are far more detailed than the tower itself, to the point they look out of place. Maybe add more elements to the tower itself, as some stair, and choose more defined textures, to enrich it a bit, so they look like actual bandit buildings. Also, if it attacks you should consider using "bone_turret" to make the cannon face the target when shooting. Awaiting improvements.