Creo 3.0 Best thing

I like all the minor improvements to the 3d drawing part of Creo3 and I hate all the 2d improvements of Creo3. So I currently still use Creo2.

I really hate that they made the UI so mono color looking that it's harder to have a visual memory of what icons are what.

The great thing in Creo 3.0 is notification center, which helps you to keep your models proper. Also some UI changes are pretty good: icons in context menu or new UI for reference changing.