Maybe it would work if they did it just like X-Men Unlimited except with all of the Ultimate Universe. Take Ultimate character/s and put them in a scenario. It could even be used to write certain backstories of characters, but not have a huge mini-series on them. Another idea is to use it for characters that have been written out of the Ultimate Universe. Psylocke, Emma Frost, Karma, Havok (I know Emma and Havok are returning, but I thought that I'd use them as an example). There could be a story on how Psylocke struggles to cope with two 'souls'. The struggle between her and Kwannon.