While I don't mind the racial sets that exist I'd rather them not take the time to add more. Unless of course they 'do' add a new race down the road as unlikely as that seems.

In a vacuum, it'd be neat to have more but we only get so many actual new sets per expansion/patch as is. The resources to make a unique armor set for each race would take away at least one 'tier' of new armor, maybe more since new armor sets tend to reuse assets. (Caster/healing gear often being palette swaps etc).