Well, the LT fairing will not accept any other bars that I know of. Because the bars need to be shaped like wheelbarrow handles in order to fit into the fairing. I'd like to buy a k1100 rs in the future but that isn't in my immediate future. Since buying the K, I've done a lot to it. One thing that I did about a year ago was to install a Corbin seat. It moved me higher and farther back from the position of the OEM "comfort" seat (whoever named that seat was a real joker). The bend on the bars has always bothered me. An unnatural wrist twist, as a lot of BMW bar bends were - ymmv.
I am going to try to tilt the bar downward a bit to see if that helps.
Otherwise, I love the bike for cold weather riding. The fairing is awesome. With the electric grips going and my electric vest, I can ride in any weather I want, traction not being an issue.