I think as well than EVERY single key should be remappable. Flexibility is always a good thing which can be easily achieved and really improves the experience people could have with the game (think alone for left handed people....)
I can think of no RTSs that allow remapping of the production hotkeys. Even in SC2 SCVs (s) Probes SCVs (s or e? I never play protoss)) and Drones (d) have differing hotkeys. But no complaints. Every title uses it's own production hotkeys. Why the heck are supply depots (s) and Pylons (e) and Overlords on different keys when those to have effectively the same function and spot on the UI? It just the way the Devs wanted it to be. No remapping allowed.
Jumping between RTSs does mess you up. Especially RTSs with very different dynamics. Base-builder (SC2) vs set-structures and hero (Dragon Commander).
That being said, flexability is good. Alternatively, assuming you are a gamer, there is hardware and software out theree thats lets you remap a keyboard for games that don't remap. I can set up macron on middle mouse button, and the Home key queue a dozen zerglings (Hatcheries on 1>s>z>z>z>z>z>z). I don't do that but it's really easy to create profiles for you input devices if you want.
