I switched out the stock throttle barrel with a Throttle Tamer last week and really like the outcome. For riding on the street, the throttle response is much nicer. FWIW.

O2 eliminators and a custom map would have you going the opposite way and getting a faster throttle cam.

I've got the O2's switched off and your map Klinck, and round-a-bouts in slow traffic are still a bastard.

I have all the usual mods along with the throttle tamer, and feel it's just right for me for both street and track..especially in bumpy conditions. I have a pretty heavy hand and don't think I can do the small increments required to ride smoothly with a quick throttle.