I can't believe I have missed this thread.
Mafoofan, why do you insist on buying all your furniture from Cappellini? They are hardly known for their robustness and quality control. Yet, one accent piece from Cappellini is great, but a small living room consisting of single picked furnitures from them is not going to look good.
I only bought my Elan sofa from Cappellini, and only because I knew Cassina built it for them.
Your cappelinni furniture should be considered as a sculpture, and needs to pop out (think of embryo chair or the felt chair) in a more muttered and cohesive interior.
All your interior should be built around the florence knoll sofa with furniture which will blend with this design, which you will not find at cappelinni.