Some of the existing voicelines would be very useful if added to the tag wheel. Specifically, the ‘come get healing/ammo’ lines, as well as the confirmation line when you tag an ally’s marker.
Some other useful ones would be good job, help, I’m ready, sorry, yes and no.
Most people don’t have or don’t use their mics, and standing still to type isn’t possible in a lot of situations where you need to communicate - especially since you don’t automatically block with the chat open. Adding a couple more options to the tag wheel would go a long way toward making coordination easier (and more immersive) when playing with randoms.