Well, I decided against picking up a 17-55 and/or 17-50. I decided I am interested more-so in investing in FX in the 12-24 month future, and investing in a 17-50 or 17-55 while I already have a perfectly working 16-85 just won't make sense. The 16-85 is less a "walk-around" lens to me though, and just another tool. I feel like the word "walk-around" doesn't really ring well with me... if I'm walking around with a DSLR, I'm going to have a backpack with me, so I'm always going to have at least 2 lenses with me. I certainly wouldn't want to be stuck with just the 16-85mm when walking around... and I have no problems carrying a prime or two with me alongside the 16-85 any time I take the camera out. In many ways the 16-85 has been 50% of the time acting as a 16-24mm lens for either f3.5 shots in close-quarters, or 16mm shots at f7.1+ for landscapes. I feel like if I get a zoom, it needs to be FX, and to be honest I'd like to see VR in it... so the 24-70 looks enticing, but I'm going to wait until I actually make the move to FX.
I decided for quality f1.8-f2.8 shots, I'll stick to primes. So I may very well still get a 50mm 1.8G, and 85mm 1.8G is already on the list. I have a 35mm 1.8G already.