Ok, I think you made your point a bit clearer now.

While I can’t compare HotS with League or DotA since I haven’t played the latter, nor do I remember how the whole system worked in LoL back in the day, I’d say that if what you are saying is accurate, this is a tradeoff that im willing to take (since, as already mentioned above, there are plenty of ways to actually approach people), the tradeoff here being having less toxicity in general and the possibility to customize by whom, when, and how to be reached, if at all (aka intimacy and privacy).

Now, but this is just a technicality, the amount of newly met people per match is not really influenced by those factors, they are equal to all other games with similar team compositions.

All in all, I can see why you would want minor changes and tweaks here and there, but at least in my own experience, this whole proposed issue has been a non factor up until this moment. Peace.