2 vs 1 Up-raiding matchmaking system

I'm not sure how complex this would be to implement on this platform, but I think a 2 vs 1 up-raiding system would be fun. It would give a chance for the little guys to work together to try to take on the big guys. Would give them a chance to get familiar with high level defenses.

Some details that could be interesting/necessary:

**Similar formula for war matchmaking (Total strength of attackers vs defender)
-Defenders tap a toggle button in settings to be available for the up-raiding matchmaking system when they log off.

**Players take 20 sec turns before battle starts to "flag" their targets/attack positions (maybe 3 flags each?)
-would allow for some minimal form of tactical planning between the two attackers
-maybe the first turn can throw down a request for backup from their ally at a particular entry point

**In war, each clan could be granted a single 2 vs 1 attack. Participants to be decided by the leader.

**Split the trophies/resources earned by damage percent or a structure value system.

**Players can see their ally's available troops on screen during attack so they can guess at their strategy.

**Bonus incentive for successful three star. Surrender unavailable. (This will be nice for the defender to get a good shield.)


I'm sure there are many other ways to do this, but this seemed more CoC style to me. Would love to hear any thoughts.