Keeping Warzone Fresh

I like Warzone, but I haven’t played it as much as the basic Arena playlist. I was thinking about it and the one thing I said is that I think it’ll get stale with the same A.I enemies, especially the final boss, namely The Warden. So I’d say to keep it fresh, use other big bosses depending on the map. I’d like to see one map with a Killer Hunter as the final boss, another with a Brute Commander as the final, so on and so forth.