I think there’s a breakdown in communication here…
OP doesn’t mean an actual arena built by CCP, he’s suggesting he hosts regular arenas in an area of EVE, which players can place bets on the outcome of the fight, in a league/royale rumble style event.
He’s not asking anybody’s permission or requesting CCP to build an arena, he’s fishing to see if there’s interest amongst the community, and there seems to be!
Hope that helped