I don’t think a copy paste of the Apex ping system would be very good for OW but I think being able to place a 3 dimensional pointer into the game world could be quite valuable.

In OW they could make it so that you only have one ping that places down your character portrait, that way people on the mic could communicate a location by saying something like:

‘Over by the ana ping, we have a Reaper flank.’

Anything more complicated than that would likely make the experience worse by cluttering the screen.

Honestly the robust sound system and close proximity combat makes up quite a bit for the lack of a ping system but I would be lying if I didn’t admit after coming back to OW from playing some Apex I’ve been trying to ping locations to point out a threat