Something like that is missing in tango - the expectations are higher - and with three years of experience (talented) or ten years of experience (untalented) it can be fulfilled pretty well ... by leaders.
I think if you need floocraft then it's better to practice that while dancing as a focus for a time than attending a workshop. But actually the problem seems to me to be that most leaders avoid looking at each other on the dance floor and while dancing anyway. A non-attack behavior that makes sense in an elevator, but not in tango.
This - if students don't actually expect to be dancing a social dance how do we expect these skills to just suddenly appear. I don't think that the expectations are actually higher - what seems to be happening is more that dancers are expected to use excellent couple dance skills to replace social dance skills. Sure, somebody who has ten years of experience as a dancer will be able to survive in a ronda, especially if they have some basic ruled how it is supposed to work, but it is not going to be a fun experience. I think we need people to either be on a social dancefloor, or at least see a social dancefloor and being told "this is what all the technique is in the end _for_" as early as possible.
I used to say that the minimum vocabulary necessary to get on the dancefloor was walking+rocksteps. I am now a bit unsure of this, as rocksteps as danced by beginners can be very rough, and they require quite a bit of nuanced timing to feel good, but i have not found anything that would easily replace them in terms of versatility for navigation/pausing/robustness. (And yes, i know that pausing is a important part of the tango vocabulary, but for beginners who are unsure about their connection and their connection with the music i find that something that keeps the couple in the pulse of the music is easier).