I am broke. All the time. That's what happens when you play aggressively.
I play much less aggressively, and I'm still broke a good deal of the time, especially in multiplayer. I know how that goes, when you're trying not to waste time/resources.
What I mind the most is someone like the original poster who is asking for a freebie economic easy button, but when I want an economic easy button, it's an outrage to them. That's my problem.
I think where the real problem comes in is that what they're asking for is something fairly trivial that extends something already in the game and doesn't have a major affect on anything, while what you're talking about highlights a major problem in the game. Specifically, auto-energy management suddenly gives everyone the ability to be effectively immune to having their shields go down when they lose a couple reactors, which is currently something that is only true for people who are actually good at the game.
That's what the real issue is. Having your stuff shut down because you don't have enough energy is supposed to be (and
is, if you don't run around micro-ing everything) one of the few serious threats the AI poses in an attack where it can suddenly roll right through your defenses when they all stop working. That can already be eliminated by doing what you do, and your suggestion would
completely eliminate that from the game entirely, except for very extreme situations like exo-waves taking out half a dozen systems in a row.
Maybe the real question should be how that kind of threat can be created by the AI, regardless of whether it is or isn't tied directly to energy reactor micromanagement.