Hopefully this is what happens.
But, overall I just feel that the icons for objectives are too huge. And thanks to that we can have only one icon at the time. 
Atleast if the tapping part is true, then I don’t have to worry about picking my fingers up from the moving controls on the PC.
I do know however that tapping up on d-pad activates the most important mission. But hopefully looking at downed players overrides that.
Do we actually see icons for downed players through walls etc?