Why not try it for a week, and see if you like it? A morning kick-off call is standard across many industries.
I guess what @newwurldmn is also trying to say is that this isn't a profession where you drag yourself to your desk. On most days I'm prepared early and a little excited for the day to start, of course my hours are completely different as well. Can't imagine trading while being demotivated, it can't end well.
When you're all done patting yourselves on the back for your diligence and work-ethic, you could answer OP's original question as to whether you'd participate in a call...
All of you could have saved yourself the 30 seconds it took to pull down your pants and shit all over his idea and just ignore it. he wants to know if people want to do a huddle pre-market to exchange ideas since CHAT is no longer working. If it is not your thing then fine.