I thought the cookie issue was solved?
I had no problem with getting logged out when not using the www since the site moved to CloudFlare/Amazon.
Also, IIRC pretty URL was considered before, but it didn't work on the two previous servers that Omni used. Staff would need to try it on the current server. Also, if those URLs are enabled, I think that old URLs should continue working as alternative too, to prevent breaking any link leading to our website.
ANd yeah Https would be nice with Youtube tags.