Such a pleasure for my eyes!
I also liked the removal of custom fonts. System's sans serif is fast and easy to read for an admin panel.
I do have concerns about the website tiles. Makes it really hard to quickly overview and find them, especially when I have 16 websites there.
Also the "Recently launched" section is kinda redundant.
Let me explain:
When I am a "power-user" and have a lot websites, I already know my way in the panel.
When I am a "nodehost-noob" and have 1-3 websites, I see them two times, one right after the other. I have only a couple, no need to quickly find it as recently launched.
food for thought
thank you for your great job and for building such a great hosting solution!