It won't be like a movie, it'll be like one long episode.Film adaptations of popular drama and comedy series have a mixed track record, to say the least. I'm still recovering from the 'Are You Being Served?' movie of 1977. Let's hope Kit's involvement creates something creditable.
It'll be the same as the last 2 series, all the labels will be shoe-horned in, most of the acting will be dreadful, there'll be a "fuck" thrown in to make it feel mature, maybe some nipple or some upper butt to make it feel like there's sex.
If her recent comics are what make up the final book, then it's going to be embarrassingly bad (seriously go on Tumblr and read it, it's so awful).
But, contrary to my criticism, I'm glad they get to tie it up and move on rather than it just being cancelled without an end and people moaning for years to come "when will we get Season 4 news?"... I'm also glad there won't be a Season 4, because for most of the casts sake, it's time for everyone to move on. Sure, alot of the cast will never find work again, but for Kit, Joe, Jenny, Will and Yasmin this must have been like a millstone hanging round their necks since Season 3 came and went.