I read Ultimate F4 back in the day but towards the end it went off the rails. I did like how they turned Reed into a villain. There should always be an an alternate universe line that allows creators to experiment and explore different variations of fan favorite characters. I would not go so far as to say that they should bring back the Ultimate Universe but it would be fun to have a New 52 style alternate line for readers who are curious. Not really the "What-If" line but something more coherent in one alternate universe.