I like the runtime display in WPS a lot. I don't think it should be removed. It wouldn't reduce code size on the relavant targets, being essential for the archos. Even if the runtime is not very accurate, it gives me a feeling about how much time is left in the worst case.
This feature has been in Rockbox for a long time and I think that there are quite a few people like me using it. If people find a single menu item confusing, then there is the manual, you point to that in many other cases, too. When I first put Rockbox on my player and browsed the menus, I saw the battery item, turned my player around, saw that the right value was set and never entered it again. The only confusion I had was why this was the first item in "System"
