I don't think the previous design was bad, it's just we couldn't disable the recommended section, and if we did we would still see it with a text says you need to enable it. All I wanted was to only see pinned apps, this new start menu still has recommendation, I don't want windows to recommend me anything because it never works. Now we can completely disable the recommendations, that's fine, but what about All Apps? It's in the same page as pinned apps, the previous design was fine, all apps in a secondary page.
The other good thing is that it's now a single page with slides, instead of different pages for pinned apps that doesn't fit in the first page.
It's too big is what I can say, making the recommendations completely toggleable, leaving all apps in the other page, making the pinned page sliding as the current one, and keeping the start menu in the same size would be better. That's my opinion.
The new all apps view isn't bad, but not something I'll be using, I always press Win and start searching whenever I need something that I didn't pin. So why no option to hide it behind a small button again?