First thing to do about the throttle is to take the slack out of the cables. Makes a world of difference in low speed/light throttle operation. Done by peeling back the rubber cover on the cable set that comes out of the throttle control housing. Pretty obvious and easy what to do when you get where you can see the adjuster.
I would add to RealShelby's comment... I tried this method on my Vee2 (2104 DL1000) when it was new. I had to open up that upper cable adjustment all the way so that only a few threads were still engaged. Still didn't quite get to the standard set point of 1/8" freeplay in the throttle.
When I took it in for the 600 mile service, I mentioned it to the shop and they said they'd take care of it. When I got it back they had simply screwed it back together, reintroducing all the extra slop.
After looking at the service manual's procedure for adjusting the throttle cables on the other end (where they attach to the throttle bodies), I figured I was screwed because their procedure was to simply screw them all the way in and then back them off X number of turns. DOH! There are a few threads about how to adjust the pull open vs pull closed throttle cables on this forum if you need to go that far.
Turns out that the first time I pulled the air box off and could actually see the throttle cables at the throttle body end they were absolutely not set to spec from the factory. I followed the procedure in the service manual and was able to properly adjust the rest of it from the upper adjustment that RealShelby mentioned.
Long story short... If you don't get it to the right spot on the upper adjuster, there is another adjustment to be made down below.
This helped some, but ultimately had to learn to feather the clutch for stop and go traffic.
Some say that removing excess slack from the drive chain also helps, but keep in mind that the chain being too loose is FAR better than the chain being too tight.
When Suzuki recalled the ECU on certain Vee2's that also made a significant improvement. However, I still use the clutch to smooth out the snaps when rolling back on the power at slow speeds (low gears) .