If BR brought in experienced coaches he's be undermining his own position. In effect, it suggests that FSG should've appointed an experienced head coach in the first place instead of BR the novice.
On the other hand though, it could be part of a strategy geared towards long term stability whereby a young, fresh coach with good ideas is given the chance to build something. This approach has its risks as we can all now see but hopefully these are just the proverbial potholes on the road to success.