I'm not very creative, but what about this: "submit scores with x number of different hardware of type y" (y=CPUs, GPUs, Intel CPUs, AMD CPUs or whatever).
I'd also like to see socket achievements for all sockets
You can also add the lengthy run challenges for some CPU benchmarks (in the same way there is one for AM3). Superpi 32m and wprime 1024m are good choices.