First of all, this is a great site. It helps our guild to check people's gear quickly. Now we used it as a tool to screen for new applicants. Many thanks!
One issue with using wow-heroes is people may need to switch to alternative gear for fishing, pvp or occasionally questing. If they forget to switch back to their best raiding gear when logging off, their total score on wow-heroes may drop by several hundreds. This causes confusion sometimes. This is an even more common now with dual spec, as someone may, for example, has very good healing gear, but logged off with secondary tanking spec and poor tanking gear.
While there is probably no perfect solution for this kind of problem, it may help if the site can save the highest score for individual character. With this change, when we look at the guild member list, we can rank people's real gear score based on this saved highest score and no need to worry about some people are actually switched to alternative gear.