2v2 Tag will be replacing the current 2v2 mode because the game is balanced around 1v1 combat and there were a lot of broken things with 4 monsters in the arena at once. This will also make it much more possible for a single monster to take on 2 enemy opponents of the same level.
The command for switching targets will now tag your teammate back in instead. If your teammate is an AI then you can use this command to tag yourself back in.
Here you can see 2v2 Tag in action:
https://www.youtube.com/watch?v=4v_BA7b6NbA
I want 2v2 battles and coop to be a big part of the game so that it's more than just a fun wacky mode that the current 2v2 system is. I want it to be a competitive and strategic mode and I would like to offer coop experiences in PvE. This is one big step towards that.
Also make sure to join the M.EXE steam group here: http://steamcommunity.com/groups/mdotexe
And the M.EXE discord here:
https://discord.gg/NTfhCku