Joining the Camonna Tong is very unrealistic cause they don't accept ANY outlanders, this also include Dunmer who aren't born on Vvardenfell (or Morrowind?)...So every mod that let you join them is a conflict with lore in general.
Try
- Suran Underworld (Bloodfang Tong)
- To serve Sithis (Dark Brotherhood)
instead.
Because it is impossible to roleplay a native Dunmer?
Sure the NPC's will probably still call you 'outlander', but you can easily ignore this. Just because the game doesn't expect your character to be a native Dunmer shouldn't make it impossible to roleplay as one.
It probably will take far to much time but it would be nice to have 4 different options to play a Commona Tong mod:
-Native Dunmer, as soon as you prove your loyalty they threat you good.
-Outlander Dunmer, they dislike you but they will eventually start to trust you and might even accept you as one of them after a long time.
-Outlander, they won't actually let you join them, but they will give you some jobs and use you for there own benefit. (This doesn't have to mean you can't join the faction in-game it just limits you to the first few ranks for example.)
-Beast race, you can't join they won't let you help them. They might have a very few quests for you like using you to trick escaped slaves to come out of hiding (since you as a beast race can act like an escaped slave yourself), but in the end they will try to capture/enslave or kill you.
It would be totally unrealistic to have beast races be some what accepted, they might use you a little bit and then try to get rid of you but nothing more.
I understand that 4 different options is probably too much work, so to have it lore correct it should threat you like a native Dunmer since they are the only ones that actually would be accepted. The mod won't make sense if it is played by a non-Dunmer character, but if you care that much about it you shouldn't a Commona Tong mod while not roleplaying a fitting character.