- we're always looking to expand POSH and definitely give it more usecases, plan is to eventually make it deflationary and bind more tokens under it. Nothing set in stone fully yet but there's plenty of ideas (which also covers your 2nd question) we're looking to combine with posh due to its fair distribution (no ninjamine/team allocation) to those who've brought value to Hive in the form of sharing content on #web2.
As for your last question, hopefully something we can help cover with posh as well, part of it being easier account creation (temporary account solutions).