Green or Blue?
I just picked up my Blue one last Saturday, and like most on here, can relate to your points.
The Cowl buzz just started for me yesterday- 6-700 miles in. No tank buzz (yet). How many miles did you have before you heard that?
The seat doesn't seem that bad, though probably haven't ridden more than an hour and a half with out a stop and stretch session. I checked out the seat mod, but it seems like there isn't a lot of foam where I sit, right at the back of the seat. I have an Air Hawk and a Sheepskin seat pad that I may try, though the seat is up-there for me as it is.
I've always run soft luggage on my bikes before. I have the Ortlieb throw-overs from Aero-stich that worked on the TDM. Also a set of the Chase Harper Sport bags that I used on the Bandit. Neither one works on the Versys. The short distance between the start of the pillion seat and the turn signals, as well as the grab handle placement and the lack of a rear rack, or even a spoiler, is what causes it. I ordered the SW Motech set-up, both rear rack hardware and Contour side rack mounts. Also ordered the Givi plx35's though I'm pretty sure I could run either set of soft bags with the additional length and structure added by the racks. Also the signal relocation. Twisted Throttle has a good return policy. If I get it all and it doesn't seem like it'll work I'll only cost me return shipping. No Scratches though!