I pay attention to these small but meaningless things. Since Cataclysm, Thrall as we all know him, has been called "Go'el" in-universe more often as that's his real name. I notice the people that refer to him with his real name are his friends or loved ones, and the ones that despise him (Garrosh) or are uneasy of him still call him Thrall. Fitting since "Thrall" scathingly means "slave" in human tongue.
As far as players are concerned though, no one I know, even lore enthusiasts, have ever referred to him as Go'el. If it's brought up, it's usually mocked on how asinine of a name it supposedly is. Is that so? I used to always call him Thrall years ago but in recent years I conditioned myself to cease doing so. He has lots of fans and is iconic as a character in this franchise so I'm mildly surprised even after quite a while now, no one respects this development of his.