Call me a geek, but has anyone else seen the anime Sword Art Online? I'm not one to get into them, but this one really took me. I am suggesting something in their world - Boss Battles. Now, I know that Champs and other spawn types exist already, which is fine and good, but what I am suggesting goes beyond that. To not give in to spoilers all that much, I would just like to say that within their world, they would need to kill a boss to progress to the next level. So, to adapt that idea into UO, I could see a Tower or dungeon of sorts that has an increasing in difficulty boss at the end of each floor (and subsequent mobs on said floors get stronger as well).
This Tower/dungeon would have to be something people would need to work together to accomplish. Maybe the first few levels are solo-able, but after that, going alone would be suicide, for any player. Each floor could have its' own restrictions like no magic this floor, or no pets the next (auto shrink coupled with "You can not use this here" scripted). Any way, would anyone else like to see something like this? Something that the player base can work together in groups on? Maybe even have a scoring system and an attempt standing/ranking? I think it would be fun and add some more excitement / fun for those players who have gone stagnant at Brit Bank.