This is a very minor tweak, but still quite important to me.
By default at startup, Transmission lists "All" torrents (from the list of All/Active/Downloading/Seeding/etc). Would it be possible to store the current "view" on exit, and restore that view when you start up Transmission the next time?
So, if you had the list of "Downloading" torrents open when you close Transmission, that would be the list that shows up next time you start it up again.
I'm using Transmission version 2.33 for Ubuntu 11.10