I was soooo thrilled at the addition of octagonal roofs, as I use that room shape a lot. Then I found out that you can only make 'square' octagonal roofs, and they more often then not totally don't al...
Based on their shape, I imagine 4-way directional manipulation would be tricky. It doesn’t bother me really, both Sims 2 and 3 restricted those roof types to perfect square footprints as well.