I think that there is a fairly fine line between workaround and method. And that distinction is usually made by the person in charge (Albaka, in this case).
Take the mining thing for example.
The miner is, pretty much by definition a mobile device. You can use it repeatedly in the same spot, but it'd be a little pointless. The generators usually aren't that mobile. Either they take a large area, and lots of setup to get running at a decent rate (most renewables), or they take a fair amount of raw materials (standard, geo, nukes, etc.).
This leads to some creative ways around the problem. Some like plonking down a few standard gens, loading them with charcoal, and leaving them be. My personal preference is usually towards geos, until I have the resources for an MFE/MFSU and the relevant transformers, to move energy more efficiently. I've heard the method of using a solar flower, or MK1 nuke to power it. None of these are wrong, none are right. They all use blocks in ways that they weren't intended (i.e. frequent pick and place), because trying to supply a hungry miner with batteries is a little silly.
I am aware that there is a use-Lap crystal line in the config, and I've been trying it out with it on recently (while doing a little beekeeping with forestry), but I think I'll reset it back to the default, and go back to finding a way of powering the miner with the minimum amount of waste possible, because it was more fun that way, and I think that's why it's off by default.
To swing this back to the topic at hand, it's perfectly possible to run around with a whole mess of RE batts to keep your drill charged because you want protection while working. That's no less valid a method than the alternative of changing for the bat/lap-pack to charge, and then suiting back up. It's a price you pay to be protected. I tend to be more cautious, but keep my lappack on most of the time, unless I'm specifically exploring, so I don't need to worry about power, but that's just me.
As I tried to say in the previous post, you're not going to get a magic-bullet type item, because that would make it, inherently useless. You'd work towards it, and then have nothing to do.