WoW's Armory, which showed up a couple years after EQ2 Players, gives free access to a lot of data which has spawned a some really useful 3rd party sites that will evaluate your gear and such.

Hopefully, with the EQ2 Players data now being generally available, we can look forward to some interesting uses of that data by 3rd parties.

While they're at it, how about improving EQ2 Players so it's as good as Vanguard Players, heck, even single player RPGs like Dragon Age and Sacred 2 (which does have MP, but not massively) has a similar thing, but seems to be done a lot better. Also, would be awesome if it now kept you logged in if you tick the "keep me logged in" box…