I was just thinking that the show hasn't had any repeat powers. I doubt that the 4400 would share some abilities, but with promicin reaching other people it could be possible that a promicin positive has the same power that we have seen before. If that can be the case, what power would you like to see repeated?
Personally, I think it would be interesting to see another mind control, but not as sweet as Tess. It would be interesting to have an episode dealing with how to stop someone with such a strong ability.

Even though Tess is sweet Ntac definately had their problems with her too, and it was not pretty, I personally would NOT want to see that one repeated. I would like to see April's ability repeated it is always good to find out the truth behind people's phisads.

Actually there are several 4400 that share abilities only with variants. One ability acts in one way the other work in a slightly diffrent way, similarity vs. identical i suppose. Kind of like how the Hulk, Wolverine, & Deadpool all share healing abilities but they are very diffrent.