button prompts can be recognizable by silhouette

It fit my hands really well. C stick was entirely game dependent, some used it heavily and others ignored it - sort of similar to D pad, but that's been pretty common since games started supporting 3D environments - D pad was only the primary movement control in a 2D game or menus, and occasionally used for ancillary stuff. That is the same to this day so it's kind of a moot point with this controller specifically.

Personally I loved the asymmetric letter button controls. Was goofy looking but way less awkward thumb movements to reach stuff.