At yesterday's matinee, there were about 30 people at stagedoor. I went to the bathroom after and didn't hurry and still got to the front lines. They announced that Daniel doesn't do Saturday matinees, and some people left, but most stayed. And we watched as the other cast members walked out and smiled but except for Sarah Greene and (I'm sorry) one of the aunts for a few minutes, no one stopped to sign even when politely asked. Which is of course fine. But yeah so judging just by yesterday (in gorgeous weather) I'd say Saturday matinee stagedoor has a manageable crowd but there's very little benefit to it (unless you are dying over Sarah Greene, who is very nice).
Also, fyi, I did a separate rush that morning then went over to the Cort to see if any rush was left for the matinee, and there were several still. At about 10:45.