each disc has about 2 and 1/2 hours of content and the street scenes that I spotted in the trailer were...
Mr Hooper's death
Snuffy is revealed
Maria and Luis get Married
Gordon runs a marathon
Bob's brother visits
Around the corner premiere
Abby's debut
Jerry Nelson tribute
Julia's debut
and each street story runs from 15 to 20 minutes, and if the entire disc has street scenes then there just might be room for the bathtub sing along, Margaret Hamilton episode and the first episode (I just really think they should add the first episode since it's the most important)
The various press releases also confirmed the NYC Marathon with Gordon and Snuffy will be included, and I think the Vulture article said that it'll have Snuffy's debut (but will it just be the two scenes involving his introduction or all of the street scenes?). I sure do hope we get a few long-unseen street stories from the 1970s (many of those only have the main plot focus in two or three scenes, should be easier to fit in, though the ones I most want to see do have a lot of separate scenes).
I'd like to see either the one where Big Bird runs for president or Cookie Monster runs for president. Then again, with next year being an election year, that would be a better time to release these episodes.
In my head I have thought of the possibility of some street scenes being on disc 1 as well, street scenes that don't connect to other street scenes (though they were only in one episode, maybe two if it was repeated once). If only there was more disc space, it'd be cool if each season could be represented with a (non-insert) street scene, a Muppet segment, an animation segment, a number segment, a guest star segment, and a human cast segment (of course many of those could easily overlap). Of course that's six clips per season over 50 on just one disc, probably not too likely (though a lot of animation segments are quite short).