Hmmm, it seems most people think that a set cycle automatically means rushed and bad games. I think 3 years would be a decent amount of time to make a good game, but I'm not a game designer so my knowledge of the subject is not all that great. DA:I has been in development for what 4 years? I would guess it took longer then usual since they are working on a new engine, so once that engine has been broken in it seems like development time of future games would be a bit faster.
Soooo...that in mind I think the three year plan could work very well. It is just a matter of if the company has the staffing for that, and/or them being willing to semi-constantly be working on a game. Plus that doesn't really factor in many games have close to a year of DLC support too. -head spins around a few times-
In short I would love it if there was more games of quality coming out more often! The gap between Mass Effect 3 and DA:I has been horrible for example. However, I want whatever is best for the games themselves. If that means waiting so be it. However, if they can find a way to make it work with games coming out more regularly I'd be pleased as can be.