Here are a few things Sitecore can improve on:
- Sitecore Admin needs to load faster
- Need an easier way to assign renderings to place holders
- Need an easier way to Assign roles & users to folders and content items
- Right now it is a pain to get it setup on Windows 2008 with SQL Server 2008, it would be nice to get an installer which does this for you (Sitecore posted a note saying that this is in the works).
I don’t know if I say it enough, I love Sitecore.