that's funny. is that orginal? or maybe just first time i heard it.
the work to reduce resistance in any mod may not be worth it anyone person.
the difference between 0.5vbulb to 5761 is first of all measureable, is noticable to the eye-at least to couple of people I know who use a m@g61 alot. Looks a couple of 100 lumens brighter, the less difference between vbulb and vbat the less heat is generated with loss of runtime and lumens.
couple of hundred lumens less, less runtime, increased heat may not mean anything to some people.
But if it saves you money would you care?? Long term greater efficency less cost in batteries, they last longer not needing replacement as often because have been recharged less.
Money doesn't motivate me. I would not do all the work of resistance fixs, swaping out parts made of tin with copper plate, wiring bi-pin direct, etc. just for money. Do it because I obcessed and like pushing envelope.
jim