Oh god, yes please! 
Please give me a dwarf fighter called "The Nuggalope"
Hahaha
Yes! (Though that would likely be confined to a cutscene. I can't see that happening in real time with this game engine. >_>)
Also, you think magic is allowed in the arena? Probably. Maybe only the super special matches are just two mundanes facing each other.
And I still want them to use magic and engineering to flood the thing like the coliseum and reenact naval battles against the Qunari. Though they'll prolly do it with actual captured qunari. >_>
Oh, you know I bet there are ground level, underground-accessible box seats for the ambassadoria. Like, basically the best seats in the house for some types of matches.
... There's also likely fights to the death and such, which I am not ok with, but I do like the idea of a sporting arena, so...
