I agree, but order isn't the way to do that, as it could mean you did 49% or 4%. A better system would be to just explain what each author did.

No doubt. Or not even have such minor contributors as authors in the first place. Perhaps you should have to have actually written part of the paper, like an actual author, or at least done some novel research of your own. Technicians and others who assisted with it, even did all of the grunt work could just be acknowledged if they want some fame. But I guess that authorship is a kind of payment-by-exposure instead of actual money and enough people are desperate enough to take it.

In the last few years, an increasing number of journals are adopting that kind of system.