It might be fun to try a character who is soft spoken and forgiving most of the time, but perhaps has a passion or a pet hatred they get really vocal about.
Eg a Zandalari who really really loves their loa and whenever it’s mentioned has to remind everyone who great it is.
Or a Forsaken that is still crazy loyal to Sylvanas and just wants to stab anyone who questions that.
Or a Pandaran torn between wanting peace but knowing war is inevitable.
Just some random thoughts there!
If you’re going Horde (or even if you stay alliance) I’d suggest making a character fast, name / race / one key trait. And then taking a look at the PCU guilds and joining one.
I suggest this because I have loads of fun in said community, we cover almost all races, and if you find your first character isn’t working for you it’s easy to try a new idea and switch guilds within.
If it wasn’t for PCU I’d have never tried Draenei RP. I joined as a belf, switched to zandalari, and now gone blueside!
This thread has details of all the guild concepts under THE PCU banner