I'm concerned with the wheel as a whole. Sure, I could just upgrade the spokes with stronger ones, but I still wouldn't feel confident with just 16 spokes. Since I have to upgrade the hub and the rim to increase the number of spokes, I might as well as about a complete wheel build. Hence the thread.
I'll take a strong look at Velocity's options. I'm thinking the Deep V rims would be a good start (with 36/36 spokes). I don't care about wheel weight at all -- when I get to the point where wheel weight makes a significant difference, I won't need the beefier wheels anyway.