I will start one next season, not sure how many will participate as the HNL 1 is still a small league by European standards. Even us being 16th now in the UEFA league rankings does not really get us too much attention. Its a small board on here, but it may get some people to take a look and post more often. So I will Do it, Starting next season, we'll have a prediction League.
I could participate. I already play in other leagues predictions (Italy, Germany, Spain, France, Portugal, CONMEBOL).