(I'd also add, and this is just me personally, I'm not a big fan of arenas, as they only exacerbate the imbalance between classes and devalue playing objectives. And while on this server at times you can get away with a sub-optimal comp, if you wanted to actually be competitive (which ranked is), your options are very limited in arenas, moreso than in regular warzones.)
I think this is how a lot of people feel about ranked, but I could be wrong. I also don't think there are that many pvp guild left on the server, or at least there aren't many left on the pub side. I think the best shot at getting ranked going would be to set up some times during the evening for solo ranked. I have done a few of those in the past two weeks and have been a lot of fun.