1. SlickEdit should be able to store password so that users doesn't need to login before performing version operations (commit, check out, etc). When these operations are slow, SlickEdit doesn't respond user inputs, looks like hanging.
2. Display version number right after the file name in the Project View to make the current status clear to users.
3. Add version cotrolling protocols over ssh. They are more secure.
A lot of nice features of version control could be found in eclipse, may be helpful to improve it on SlickEdit.
Best Regards!