To me the only 2 memorable FW15.16 collections were Thom Browne (menswear) and Prada (womenswear). There were a lot of really good collections and some nice surprises but these two stood out.
And overall, the menswear collections were way more interesting than the womenswear, and I'm not saying this because I'm a guy, but because I feel like menswear designers are more connected to the reality and understand what men want to wear.