Duels are being added with the addition of hive swarms, whenever those arrive. Not sure what you mean by “Combo Tage”, but the hive doesn’t need to make a mode revolving around montages lol.
Duels in swarms I don’t think will have any sort of level system, but don’t quote me on that.
Also in the future try not to make suggestions that contain multiple things. I also try not to be super mean about grammar since this isn’t some sort of English class, but I found this topic difficult to understand, and I think some other people probably did as well