It would be very beneficial to be able to see if a mob is Rare (especially in IEs), I'm thinking something like the quest indicator, maybe at the same place.
Could you please add this feature?

Since in the default UI the Rare icon is just a desaturated/gray version of the Elite icon, I decided to do the same. It was also an incredibly easy solution to this, so this will be included in the next release.

Thank you very much!