Projecting much.
Disliking character trait does not automatically mean fear of said trait.
Plus whether or not the orc has strong personality remains to be seen.
I had rather have tomboy as a new girl than another dom girl.Guys never see her as a women and she become insecure about it.
Or
A girl that love playing around and naive.She never really serious and never experiences love or dating before.But when she meet MC she finally can learn how to do a lot of things and be mature.
Or
I also want to add a loli girl but she actually way older than MC.She hate her look,but by staying in this house.They can make her feel comfortable and finally can be more confident about herself.
In my opinion,if we add Orc girl,she is no different than Naomi.The only differences is she is a dom nympho that fucking everything until she satisfied,like she did to Male Orcs and human stocks.MC will become her new toy like Naomi did to MC.There is no gentle and naive orc girls,only ruthless and dom nympho orc.