I actually think the San Angel Inn is pretty good nowadays. Much better than in years past...but that's neither here nor there.
The food in San Angel Inn is OK. I was too obtuse. Here is my thought (moving a bit away from the specifics of SB taking over MSB) - there are essentially two ways this move could be viewed in the larger WDW picture. 1) The franchising of different parts of the park(s) is good, since it will only consist of high end things (i.e. Starbucks) that will upgrade the area in some way (in this case giving coffee aficionados a good cup of joe, albeit at the expense of delicious Disney baked goods) or 2) this could lead to the opening of Pandora's box (reference for fans of culture, Avatar, and ) starting us down the slippery slope to things like T-Bell in the Mexico pavilion. I wonder if most think option 1 or 2 is the most likely thing.