I like how you added in the Tiefling empire but lumping all the 'other' races into a 'Monster empire' is sort of odd. I'll admit, with D&D 4e, there are just way too many damn races sometimes. Adding them in to any campaign can be rather problematic so I can see you've taken a bit of a 'and here's the mixing pot' approach to dealing with one off race/class options. (You're a Goblin Bard? Okay fine, you're from here...)
The interesting concept will be if anyone wants to play an Eladrin female. How is that going to work?
The interesting concept will be if anyone wants to play an Eladrin female. How is that going to work?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.