The UI in Rift is fully customizable without the need for addons. You can't complain about it in that sense TBH. Also, it's extremely similar to WoW's, so if you're complaining about the Rift UI, you obviously have the same problem with WoW. If you're complaining about it's layout, you obviously didn't experiment with the customise feature.
People are so defensive over WoW it makes me sick. The biast and one-sided-ness around here is thick, heavy, and unnecessary. Rift is a new MMO, deal with it, sheesh.
...people think there's a conspiracy to destroy WoW and they're fun. It's just discussion, on a suitable website, in a suitable forum section, by "mostly" suitable people...