PLease note: I am NOT referring to the stupid Magical Pony Cult currently plaguing the forums. please don't discuss that here as that is not what my thread is about.
This may sound silly, especially since Gimili himself once said "a Dwarf is no horseman". But he didn't say not a Ponyman! Since Eriador will be added later, and there will be hobbit units, why not try something peculiar like Hobbit Horse(Pony) Crossbowmen? Maybe Dwarf Horse Crossbowmen or perhaps scouts? Hobbit and Dwarf Ponymen scouts seems a rather reasonable proposal, maybe more realistic than the HCB idea.