A quick search didn't show anything on that topic yet, and I'm guessing it's because most people aren't at that point yet. However, the friend list limitation is starting to show, I've already had to "clean it up" twice, and I'm already full again. For me, removing old friends, even if they don't play anymore is quite painful, and I really wish I didn't have to do that. Now, I know that the FL has to be loaded every time when someone zones and that could increase the server strain, but if you consider it's only a handful of people that are even affected by it (that is, only a few people seem to even reach this point), and FL loading isn't much trouble in the first place, I don't think it would be too much of an issue. I just hate having to wipe old friends of my list to make room for new ones.