It's not a balance issue as almost everyone already uses vacuum all the time anyway.

That's missing the point so tremendously I almost don't know what to say. Infinite vacuum would replenish energy with the orbs that enemies drop from all over the map, resulting in serious AFK potential for certain damage frames. That's the balance problem. Limited vacuum does not have this same problem. It has literally nothing to do with usage. I'm confused by you mentioning it.

And it's a bandaid fix, it doesn't fix the real source issue here, that certain damage frames can easily wipe maps with no effort. However, that's going to take awhile for them to fix with everything they're already working on, and I don't think they want to juggle all of these balance changes we're discussing while they're working on PoE and other stuff.

I wrote in my last post that we should get infinite vacuum. Just not now, because it wouldn't work with the game as-is. And they're not pushing back PoE for quality of life updates and infinite vacuum balance changes. So it's low on the priority list. I think later they should go back and update a lot of outdated mechanics, but that's going to be on the backburner for awhile. Rightfully so.