There are many factors to consider when dealing with MP3's development time, including but not limited to:
1. Retro had a hand in designing the revolution controller.
Recent Ubi Soft comments have suggested that the controller was shown to thrid parties before E3 3005. This suggests that Retro knew of the controller's capabilities in early 2005, which would give them a 1.5 year spread between then and a speculated Fall 2006 launch.
2. Retro designed the MP2 demo in two weeks.
The control scheme appeared to not weird them out too much.
3. The MP2 demo was internal.
This demo was first known to exist at TGS 2005 in Oct 2005, but Retro did NOT know this demo would be shown publically. It was an internal demo, and it is highly likely that the demo was created much earlier in 2005.
4. The revmote changes everything!
Obviously, Retro will have to re-evaluate their level designs and game design tenets in order to accomodate and challenge the new control scheme, creating new puzzle dynamics, as well as new over-arching gameplay dynamics. For example, will the "lock-on" function exist in MP3? This will evidently take a bit of time to figure out.
5. MP2 Echoes released stateside in Nov '04.
It released in Japan in May '05, but one wonders what they've been at since Nov '04 anyways.
6. Retro helped NST a little with Hunters.
Maybe not a lot, but that may have slowed them down just a day or two...
And who knows what other factors to consider! Yet still, if we're going to construct a timeline, I think we should take all the above and more into account, especially the very specific timeline of the Rev controller's development and Retro's own involvement in that.
~Carmine M. Red
Kairon@aol.com