So, gather round little children, and let me explain to you (a little belatedly, i admit) about endless 8, Haruhi, kyo-ani and dissaperance.
Or rather, why endless 8 makes logical sense from a directional, productional, animational, compositional and marketing point of view. aka, why did kyo-ani make Endless Eight, 8 episodes long?
Now there are some among you, many i know, that think kyo is just trolling us. that they're trying to out-troll the great anno. others have jokingly suggested its some form of meta-storytelling.
Me on the other hand, is here to give a logical explanation, of why kyo did what it did, how it makes perfect sense to do what they did, and most importantly, how it wasnt necesarily made to make people angry.
So, lets begin, and we begin a long time ago, somewhere in the time period after haruhi s1 was complete. Some executive or somebody like him is sitting in a room, counting money and humming hare hare yukai. He decides that kyo needs to make some more money of this hot propperty. some meetings are held, and eventually its decided that the next move should be to make a movie from the dissaperance novels.
Now this is a grand idea, dissaperance is mostly self contained, its all unified and complete and its the perfect candiate for a feature lenght movie. But, there is a problem here: In order to show dissaperance, you NEED to show bamboo leaf rhapsody, a episode that was left out of s1.
Which is fine, all Kyo needs to fix this is to make a second season, and they don't want a OVA season because theres much more publicity to be had in a TV season, not to mention ovas require more animation per ep, and Kyo is allready shortstaffed with animating the movie and various other series aswell as this. So fine, a TV season it is, but suddenly, another problem. While there are plenty of chapters of the haruhi novels left. MOST of these depend on Dissaperance.
This leaves Kyo in a tricky position, Because all they really have LEFT to animate is Bamboo Leaf, E8 and the entirity of book 2 which is the filming of the mikuru movie. (techinically there are SOME chapters they theoretically could have done with some changes, but they still would be quite a few episodes short of a 13 ep season)
So, now they need fillers. But the haruhi canon is allready quite complicated and full of weirdness, and the last thing they want to do is add non-canon fillers.
And then somebody has the brainwave. what if we make endless 8, 8 times? It's allready a timeloop, so looping the ep would not be non-canon, We can make variations each time, and its still canon, and we get to explore how the repition is to nagato, and most importantly, we get a full season, (techinically 14 eps, but endless 8 with 7 eps wouldnt just be the same)
And there you have it folks, a LOGICAL reason for why e8 exists, and why it is not a troll.