1) I have heard a lot of "experts" talk about Larson in the same ilk as Dunn or Kearns in regards to the Reds producing quality hitters. Larson hit all year last year, whether it was AAA or Majors. He has done EVERYTHING to deserve a shot at real playing time, not a platoon.
2) Branyan is out for a month or so, this move gives Larson a legitimate lengthy chance to grab the fulltime job and if he doesn't he can platoon with Branyan.
3) When Larson was killing the ball in AAA last year and Walker was struggling, many of us talked about making this exact move. If I remember right, many folks thought at that time that Aaron Boone would make an above average 2B at the plate, while he remained an average or below average 3B. In fact, I think Boone could be a poor mans Jeff Kent. I think he has the bat and the skill to be adequate defensively right away and maybe good longterm.
4) The ability to play 2B, SS and 3B can only increase Boone's worth, making his trade value higher. Since Boone is a viable trade option over the next year or two, that seems like a very good thing.
I like this move. I think it helps the reds in 2003 and longterm. Kind of surprised it came from the Reds.