Hey, thanks for your feedback!
We initially considered and wanted an isometric camera angle, but because of the short time we didnt make it. We decided to bring this game to a 1.0 version within the next few months which will include the intended camera angle. The original plan also included the ability to set a single target for the tower by clicking on a specific enemy. If the enemy dies, it would revert back to the "nearest enemy" logic. This is something we will probably see in future updates as well. :)