Add me to the list of people asking for the portfolios themselves to be able to be ordered. I mistakenly deleted my first portfolio (the one that should appear on top of the list of portfolios) and there is no restoring of deleted portfolios. So, I painstakingly recreated the portfolio, but the portfolio itself is now at the bottom of the list.
Google, just make the portfolio names sort alphabetically (rather than the current chronological sort), and everybody can simply change the portfolio names.