It's interesting, but how it would determine what the best play was would be difficult.
As an example, you could say that a few consecutive player eliminations would be impressive, but would it credit the person who knocked them out, or the one who threw them out of the play area? If its the former, do they really deserve the credit if someone did the hard part for them (in the case of a player throwing out an opponent who was knocked down by another player or spectator)? If its the latter, can they be still be credited if they were a spectator at the time of the play?
What about game modes like into the game and safely afloat, where ring-outs aren't the point? Would the play be scoring the goal, and if so, what makes player 1 on red team dropping the safe into the scoring zone more impressive than when player 2 on his team does the same?