There has been a lot of talk about how to start a journal. The real issue in starting a journal is not the editorial board, or the way it is published, or whether it will gather the citation impact. The real issue is READERSHIP.
If you can get people to read the journal, then it will have editors wanting to serve the journal, and it will gather citation impact.
The reason why WikiSym is changing is for the same reason. People are not going to the conference! I think the attendance has been below 100 for some time now. That's not a sustainable number for the amount of work that goes into organizing a conference.
--------------- Ed H. Chi, Staff Research Scientist, Google CHI2012 Technical Program co-chair