If most of the crown is going to be removed, then the tapering part of the building needs to be lowered to keep the top from looking so jammed up or stumpy. It would be too repetitive all the way up to the top almost, and then it would be too busy at the top imo. If it would stay the way it is, at least just add a new crown on top. This modified job I did isn't perfect, but it should get the point across.
Before
After