I normally like short incrementals, but this one rubs me the wrong way in a few areas:
1) You cannot manually fire, and thus line up your shot and then fire.
2) You are draining energy even when no enemies are present.
3) You can only grab resources while you have energy and thus risk missing a target, to try to grab it.
4) Early game is too slow and its too hard to earn progression as everything costs too much.
5) The early weapon doesn't feel that effective. And so upgrades to it, don't feel that meaningful.