Yes indeed. There should be in depth reporting. Especially if there is billing involved with a client. I am working on mod just for that. I don't know if my particular mod will be useful to anyone else as it being built to suit my very specific situation, which includes detailed billing.
I don't know how long it's going to take me to get it all figured out but when I do I'll send it up. Though, I can't say it's really a mod, it's more sql and ferreting out the data I want to create reports I require.
But yes, detailed and selective reporting is a very much needed piece to osTickets package.
**
LC