We've considered a very similar solution. However, we wouldn't replace the current Showdown and potentially at this or similar alternatives as additional modes and see if people at large actually accept this change.
The current SD (Solo and Duo) are the most popular game modes along with Brawl Ball.
I believe this method should be put into high ranking matches like rank 25 and up preventing teaming in the higher levels
I disagree with this approach philosophically.
Changing the rules of Game Modes conditionally is very confusing as the majority of players won't get it and will be frustrated about it.
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