I'd like to point two important areas in which this add-on is essential:
1. Starting a new world: The basic wrench doesn't have a 'loss-less mode', and losing a machine early on stings a great deal more than doing so in the end simply because one doesn't have many resources to start out with.
2. Convenience: The large energy loss associated with loss-less mode isn't that big a cost in the mid-late game, but an electric wrench only holds enough juice to do one removal, and a bat-pack has enough energy for barely six more; having to constantly recharge one' stuff until one has enough lapis for a lap-pack is more than reason enough to get this add-on.
All in all Drashian, I'm glad you've been maintaining this add-on, and I hope that it continues to be updated in the future.
Honestly never used this Add-on and I don't see a point for it now days, yes loosing a machine sucks early on but honestly why set down machines if you aren't planning on staying there? (Or at least do yourself a favor and think ahead a little in planning)
As for 2.. Well like everyone has been saying if you can't afford to charge the thing then you must be doing something wrong not to have the power supply to move a few things, I can generally produce enough energy to fill a MFE after a few hours of playing (Depending on how good of world I get honestly.. cave systems seem to hate me lately)