I don't look for any feature in particular. My idea is that you develop a pro version of mylounge redirection. The price of the pro edition could be 50 dollars, or even more.
In the pro edition it should be more features. Some ideas is in this thread:
http://www.mylounge.com/phpbb/viewtopic.php?t=111
I think an advance advertise system could be very nice. Maybe some kind of text-link exchange between the users. I also like the idea of offreing guestbook for the users and offering e-mail forwarding. The list of new features could be long. I would also be glad of the pro version was in progress so we who paid could enjoy to get new updates with features. I dont know what you think, but I'm for sure that many webmaster are ready to pay for a pro version.