If you are the type to only pay attention to the big fashion houses, then you will definitely be disappointed not only this season but season after season. I think the big fashion houses usually produce the most mediocre collections every time. But if you look beyond this kind of "fashion" and explore less well-known designers, there is always much to enjoy.
I can name many collections I've enjoyed this season: Chalayan, Jil Sander, Antonio Marras, Cedric Charlier, Lanvin, Comme des Garcons, Celine, Sacai, Yohji Yamamoto, Zero+Maria Cornejo, Margaret Howell, Undercover, Delpozo, Ann Demeulemeester, Dries Van Noten, Mary Katrantzou, Vivienne Westwood, Tsumori Chisato. Not all equally of course, but there is always something to think about.
The best so far I'd say were Chalayan, Comme des Garcons, Sacai, Cedric Charlier, and Dries Van Noten. Those are five great collections. Not bad.