The idea of iteration through (a) thought I think has been explained to me before, but I must have suppressed it. I can see why it's necessary within the context and medium of twitter ... however I'm unconvinced (duh :) that it's a useful constraint to apply to a communication medium. I don't expect I'm unique in voicing this opinion.
The idea of developing a thought with another party, or as you also describe it, 'collective thinking', is genuinely anathema to me. I'm happy to have a discussion that involves me adjusting my thinking, and, of course, a discussion that results in the other party(/ies) adjusting their thinking. Actually, I expect that essence of conciliation and compromise is what you're describing. However, the idea of avoiding 'long term debate' really does unnerve me.
Perhaps I've been debating for too many years with people that I really wouldn't want to share a collective thought with.