I think it would take way much money and work to make the GT into a real tourer. The new Indian Pursuit is a nice sport touring bagger. On my touring bike I like a full fairing, large hard waterproof bags, four or six speaker stereo, sat nav, lowers on a crash bar, a tour pack and cruise control. The R3T is very much Road King like but with huge torque but still lacking a few features I like to have.
I do think all the dressing aside the old Rockets are more comfortable for distance riding.