As a former Outlander IMM, I'll tell you that these races are inherently unnatural and offend Thar-Eris with their very existence. It would be like letting someone evil into Fortress because they're a nice sort of evil. It just can't happen.

There was a goblin Outlander applicant a little while back who was just a fantastic character. Everyone loved him, but even after much debate, the hard no remained a hard no.

Dwarves are just a tiny bit negotiable, but should still be exceedingly rare as very few dwarves would buck their powerful racial identity.