I'm not sure what the typical concept is that doesn't work, but I'll take your point that animating large breasts realistically is difficult. Coming up with good morph sets is also extremely difficult, I find, but maybe that's just coming up with morph sets that I personally can use. When I see enormous lists like the above with numbered variations, I get lost and will simply give up. My brain just can't deal. And those are very typical in the Poser world, which might be the reason I have a tendency to just make my own ad hoc custom morphs for whatever I have in mind at the moment. There are enormous morph sets for Antonia that I've never even looked at because I get intimidated by the sheer numbers.

-- I'm not mad at you, just Westphalian.