Okay let's try to keep it in one place.
edit: now I realized there is a "complaining" section, apologies for bad placement
First of all, native wiki CSS is being overwritten by the new and shiny layout, which makes most pages look way different - broken links are yellow instead of red but at least I can finally tell if there is a talk page or not, thank you for that. As for the rest - tables have no padding, lists don't look like lists (no bullets, no indentation) etc.
When I am logged in official pages are empty!, when I log out I can see everything.
Special:Preferences and User page - there is now no link that would lead to this pages, preferences are accessible through the list of Special pages but that's a little too much work and no link to User to page at all.
European logins are disabled for the moment. While I might live with this now that I have both US and EU account and can easily redirect everything to my new user page and talk (if that would be necessary) others might not. Are there plans to bring them back up?