I, for one, have no experience with online tournaments whatsoever (except the leagues in Gemp). If it is gonna be FotR or TTT block, I am in, I might consider RotK but I do not know that block very much. Later sets, I have never played.
What I was always hoping to try are the tournaments in the Gemp just to see it work for once. I am ok with any format I guess and I could play mostly afternoon times on weekdays and can be flexible on the weekends.