A small suggestion by me: Ravens of the Erebor. These would spawn in the Erebor biome, and maybe more rare in dale. These would be like crebains but with blue/brown/black eyes instead of blue, maybe these should be a little bit bigger. These would make raven sounds and drop feathers or raven feathers (but i dont know what you should do with them, maybe crafting black arrows, but i wouldt make sence to kill them because they are allies of dale/erebor) also, if you kill them you would loose dale and durins folk alignment.
You should also able too speak with these birds (maybe only if you have a high erebor/dale aligment). These would have names like this (Thanks to High King Ithilion for suggesting them)
Roäc
Croäc
Arrc
Carc
Groäc
Crac
Rauc
Curc
Graa
Gräc
Cär
Craa
Garc
Coärc
Speechbanks would be something like this:
Hello, did you heard something about our allies, the other birds
Yesterday i saw some orcs
Did you heard the stories of our great king, carc?
These would be a nice addition for the erebor. Thank you for reading, have a nice day and sorry fot my english,
Gorbag12