Can't aim at a metal door with a rocket launcher

First, i love the ranged weapon rebalance, finally i can hit something more than two meters away. But i miss a small but important feature, we should be able to target tiles. Now i can hit a zombie soldier 8 tiles away with a rocket launcher, but to hit a metal door at the same distance is an impossible feat, because i can’t aim at it.

This is a very unhealthy in the narrow passages of the science labs. Please let us aim tiles when there is no valid target.