Obviously those are "valid" opinions but its about the same valid as what is in HL. As a programmer I am in agreement with LW's design that it makes more sense to be 0/50 and count up. Never even thought it was wrong until a few my "players" complained. Of course they are just "players" so I don't often pay much attention.
It would be nice if the ability of setting it to count up or down could be done so each person could decide for themselves. I tried to add that logic in myself awhile back but it failed badly. I think a bunch of fixes/enhancements have happened sense then so maybe its something I should look into again. But I fear unless the "Used" field can be changed too many existing "scripts" would break or fail to function correctly. Plus I think a few things I found where "hard-coded" into the iPad logic...