This is either the same draft (or very close to it) that i had a copy of months before the movie debuted. It's NOT the first draft but it is an EARLY draft - from a good year and a half before shooting commenced.
As someone who used to (when i had any kind of disposable income...which now seems like a lifetime ago...) collect scripts, i offer some words of advice...
Movie scripts go through MANY drafts and changes from the first draft to final version (tv scripts also go through quite a few changes but usually not to such a dramatic degree due to shorter production windows) I've seen drafts of all but one of the thestrical Muppet movies and all of them went through major changes - which is why i was originally drawn to collecting them in the first place; they're great windows into the creative process - seeing what original ideas were and how/why they changed/evolved.
Scripts go through many hands - director, producer, studio heads...and in the case of an established franchise like the Muppets, the longtime creative members of the team who know and understand the brand best...this is especially true when the main author is a newbie/freelancer/outsider like Segel/Stoller were here - but even when the main writers were people like Jim, Frank, or Jerry Juhl, things aren't perfect in early drafts - things get adjusted/changed and the first/last drafts are inevitably VERY different. There was no way this movie would have been made without notes from Disney/notes from longtime Muppet writers or creative consultants to tweek anything that didn't jive with would would generally be considered true-to-form.
It's very easy to read an early draft like this in hindsight (and after hearing press reports - some very exagerated to generate " buzz" - about how various elements were obviously in need of change ... and got fixed accordingly) and see the weaknesses. But having had the opposite vantage point of seeing it BEFORE the completed film (and with a working knowledge of the typical processes of evolution scripts go through), i could tell that even though certain elements would undoubtedly get tweeked that the potential for this to be huge, a success, and "the one we've been waiting for" was always there underneath...the gem just needed its ample polishing.
One major recurring article i always wanted to explore with Muppet Freak was an indepth look at all the Muppet movie scripts and how they changed in contrast with final film. I don't yet know if i'll be doing that or not (the new site may end up being just a new site for the existing archives...more on that in the Muppet Freak thread and the site itself...) but i definately planned on tackling "The Muppets"...though now that a good number of the fans have now discovered it on their own...if i do start such a series, i may hold off on debuting it with "The Muppets" and kick it off with a look at an older film instead.