Issues which need to be solved before I recommend a potential end-user to try out DeepaMehta for personal use:

• #330, #431, #455, #99, #446
• Notification Dialog (for displaying and dealing with exceptions and errors)
• Time based search options
• Improved search dialog (or query builder)

.. try it out for collaborative use:

• Personal views for users after being logged in (as alreaddy discussed here and there before, e.g. do not see Topicmaps of other users).
• #462, #42, #459
• GUI Dialog to set access control of objects