Hi Marc,There is no doubt that it would look cleaner if there was the proper amount of room for both sides of the returns in the corners. But I'm telling you, we tried a mock up of running the crown into the corners with "filler blocks" to bring the crown on the same plane as the heads, it just looks "unbalanced" with a proper return on one side and no return on the other side. To each his own I guess.
The funny thing about the lack of thought about window placement though is this. This is over a 4 million dollar house in Westport, CT and the builder is too cheap to get any kind of interior trim detailing from the architect. All the trim is an "after thought". It does come down to, here it is, make it work!