As a final note Deacon before I head out. What has been the more suistanable model of hardware evolution. A focus on gimmicks only and little to no graphical upgrades or a focus on graphical upgrades and spec increases with a light focus on gimmicks?
On the side of success in the gimmick corner stands the wii alone and that was only a partial success considering its failure to sustain 3rd party developers which are need in the long term to be successful. Kinct is minorly successful but its not pushing high volume in terms of game attachment and it was also the rare exception of a current console add on that succeeded. On the side of failures in this department are the 3DS, Move(largely), numerous Sega add ons and older attempts like the Panasonic remote control systems, the Virtual Boy and others.
On the other side you have consoles that have relied on significant hardware upgrades seeing the most overall success. The 360, the N64, the PS2, the PS1, Sega Genesis and Super Nintendo. In terms of sustaining software developers and hardware sales to me it seems the sensible route is large hardware upgrades with some minor gimmicks attached. To be more specific I think hardware upgrades with minor gimmicks based around a tolerable price and only sells for a loss very early on in the cycle. Ideally you also want to be the first out of the gate or very close to it.
If I were a rational actor entering the console market thats how I would proceed. And if your honest with yourself that lloks to be the route both Sony and Microsoft are going. For Sony just look at the Vita. Significant hardware upgrades with minor gimmicks.