^i imagine something like hidden objective. so let say there is 10 hidden objective, and the system will filter out those who do less, if the one on the top is more than 1 person i think the system will just choose someone randomly.

iam not sure you can decline the 1v1 event because i think yoshi didnt say anything about it though i also hope you have a choice to decline the 1v1 match if you are happen to be the chosen one.

in general it should be fine and dandy, but if you happen to be losing AND happen to be with the wrong crowd (aka toxic), i can see some bad mouth/whisper spam into whoever lost the 1v1 match which can make thing even worse community wise. at least thats how i imagine it.