Plasma 5: first impressions

I just installed Plasma 5 from the COPR repo. A fairly easy process (had to remove a few packages but no big deal). A couple of issues at first glance: 1) My carefully-tuned KDE settings are all gone, e.g. Dolphin, Konsole, virtual desktops, lockscreen behaviour etc. Can these be recovered easily (I have backups)? Why does this happen anyway, especially to apps which are independent of Plasma? 2) Speaking of virtual desktops, I can no longer see how to configure how they look in the panel. In the old system I had each one labelled with a name, but that no longer appears except when I hover the cursor, which slows down switching. Plasma is shiny and fast, so I'm generally positive so far, but these details are going to annoy a lot of people. poc