I suspect that mere "moves in this direction" will not be enough.

Not enough for what?

develop a web interface that would allows us to act as closely to our instinctive social behavior as possible.

You seem to want, basically, video conferencing. Or, if you prefer a more future-y way of doing that, telepresence in virtual reality.

The hypothesis is that it would make the discussions much less frustrating for many participants.

You are taking a very one-sided view. Online discussions are not just hobbled and maimed discussions in person -- they have disadvantages, but they also have a lot of advantages. They are different and that makes them occupy a different, useful niche in the panoply of ways humans communicate.

Sometimes you want to talk in person, but sometimes you don't and email or chat are the preferred way.

we are unable to get even there

Because we don't want to go there.