I, too, like that idea for a release schedule except that I would bump it up a month. If the final 10 come out in February, then the DVD can come out in late March/early April with just enough time for the second half of May release of Ep 3.

And, if I recall right, traditional animation would take upwards of an hour per frame of movement (that does not include backgrounds, just the active motion cell overlays. This could be sped along by the reuse of certain cells of animation which I'm sure happened on occasion in the original 20 episodes. Not enough to be noticeable to us, but enough to ease the time constraints on the animators.