I think its really interesting looking, and I am wondering how you created the color/shinyness of it all.

A few things though, mostly just nit-picky.

In your description, you wrote "Were only the best.." it should be "Where".

Also, its cool that you want to base it off of a Sangheili battle arena, but I see no signs from the map that it is based off of Sangheli/Covenant architecture. Covenant is usually purple, with a lot of curves and circles, and sanghelio design is similar. You could look to the Sanghelios campaign missions for reference.