We don't feel that the sound is 'restricted' or that the speakers are too large for the room. Yes they are too 'big" for the room when the sound is really pumped up but that scenario is rare at our place.
Depends if you believe they dominate the room or not - they aren't small! Some people like their gadgets to take centre stage, other users prefer them to be more subtly arranged. Buy any magazine on cool homes and you rarely see any electronic gadgets dominating the room. That's the only downside with the BL5s. They are big, heavy and stand out. If you like that, of course you won't feel they dominate - that's what you are looking for. For many B&O owners, who prefer that their TV is a work of art or products compliment their room, the BL5s can dominate everything in the room. And then some.