Philotomy Jurament, of the fantastic Philotomy's OD&D Musings had this to say:
And further along, I found this from Yakk:
That pretty much sums up the whole thing for me. Your typical demi-human racial adventurer fits that races particular view of what a hero should embody. Each class is an archetype. Just like the 4 human classes are archetypes of what we humans see as heroes. If one wants to make additional class options for the demi-human races found in their campaign, by all means do so. But take the time to make their choices unique to that race. After all, don't they deserve it?
I've already got my notes on Dwarven Runepriests (Runecasters, actually), but I need to work on some of those others. Anyone got some ideas of the others to share?