I've never actually played Runescape for more than 10 minutes now and again to see what new version looks like, but on a recent vacation in Spain I was sinking a few beers with friends and we ended up (inevitably) whining about MMORPGs.The MMO scene is definitely a mess right now, with subscriber numbers dropping across the board for all franchises. I'm an ex-WoW addict (clean for almost six months now) but the general trend is pretty ugly. If there was ever a (dot.com-like) 'bubble' for MMO's, it's bursting as we speak.
I can't promise anything, but since I've lived with, am close friends with, and go on vacation with some of the past-and-present Runescape team, PM me what you think they could do to keep people happy. I'm sure that the opinions of well-informed TR gerbils are better than the flamewars and nerdrage rants you get on every MMO forum to ever have existed.
I don't even care about Runescape, have turned down repeated suggestions that I should work for Jagex and should probably find an excuse to move out of London, but I think all MMO developers are floundering around with a massive shift in the market. What are you looking for in the game (and specifically, what would you be willing to PAY for, since this is what keeps development going).
Some people ask me why I have always enclosed my signature in spoiler tags; There is a good reason for that, but I can't elaborate without giving away the plot twist.