I'm a huge fan of this anime and an aspiring filmmaker. Also, despite loving the series, I do recognize its many flaws and would be able to solve most of them (even though compressing a season into a movie is bound to cause new flaws in and off itself).
I'm already writing the first draft because why not, gives me that much more time to rewrite, polish and perfect it in the years to come, and until I can get my hands on a budget big enough for this type of movie.
So, I'm interested: Which ones of you would like to see that movie? What would you expect from it?
I intend to retain everything that made the series great (great characters, awesome and smart battle scenes, intense plot, loads of suspense) and improve on what fell flat (some of the characters, the ending of several character arcs).
Yeah, it'll probably be many years until I can actually film this, but the earlier you start planning, the better, right?