I've been wanting to do an "MV5" storyline for a long time. I kept putting it off, however, because I wanted it to be canon, but I didn't know exactly where it would fit best in the timeline.
Eventually (now, I guess), I decided I needed to do another storyline, and this was the storyline I was ready to do. As such, I'm just being as vague as possible as to when exactly it takes place, and will fill in that blank later if, and only if, I decide it needs filling.
Really, strict adherance to the timeline is a major hindrance for these sort of storylines. "After ____, but before _____" is about as specific as needed, with those blanks being things that have clearly happened or not happened yet.
That said, Tedd will be in this storyilne, so at the very least we're going to know if it was before or after his haircut.