Indeed, I also prefered 6.5 version of Insight, still I have good suggestions for you that I worked around.
First thing, make sure you enable "Raw Data Input" Option
This should give you even more columns choices then before
Once the report is done, it will generate an Excel file (.CSV)
Then I do my filtering in excel with simple filters
Basically, you will have all your NAD or Roles or anything, then you just filter multiple or single of them with excel. This is the way I do it now.
Also if you know SQL, you can easily browse the insight SQL database using PGadmin and connecting with the appadmin account.
You can launch this SQL querry for exemple : select * from auth where auth_username='USERNAME' order by timestamp desc limit 5;
by replacing USERNAME with the real username and you will get the last 5 auth of this user.
I also have tickets opened with TAC for Insight, lot of bugs with date and accounting sessions so far. Also the data usage isn't right for lot of users.
Hope this helps,