"Do you ever have a problem where you just don't know how to reply to an argument-- not because you don't know the answer, but you just don't where to begin? Like, the foundation of knowledge you'd need to impart to this person before you could even begin to drag them out of their sinkhole of ignorance would cost thousands of dollars, if it were coming from a University?" -MAL in a nutshell.
"In the past few months since we met, I've shared many memories with Nagato. Though I've also shared memories with Haruhi, Asahina-san and Koizumi, I found that I've experienced more events with Nagato in particular. In fact, every situation seems to involve her. I might as well mention this, she's probably the only person to cause the bell within me to shake the most vigorously..." ~ Kyon, TMOSH
I wish they would use it to close at least ONE of the many plot holes or at least reveal one of the mysterious character background stories. Chances are it will be just a comedy. Nevertheless, it sounds interesting anyway.
Why make an OVA for a 5-year-old series when the VN remake is about to come out? It should have been something like a teaser for the remake, not a tie-in for a series that's about to be rewritten.
It's probably going to be hilarious, though, so I'm still going to watch it.