Considering it all, am with the others.. option 2 or 3.
As is, I do roll with map contacts on.. Am pretty sure the guys on subs, did take radio messages & plot them out on something if not on to the maps directly in some fashion. Using map contacts on, to Me at any rate.. fills in for that. Of course, that's just the way I roll & I know and am smart enough to realize that not every one will agree with that, which is fine... as the saying goes, to each their own.
With that said, I would even if it means the subs conn doesn't show the 'equipment' exactly... (which it'd be nice if it did & would..
) I for 1, would love that the contacts from both would show on the map.
Any how... that's My .02 cents worth on that...
As for the absence of replies... this asking wasn't that long ago posted... I wouldn't stress it too much yet... am sure more will respond, as soon as they know this has been asked for an opinion on it.
Signing off for now...
M. M.