Its so fresh moving around the ACP. Easy to navigate, clean, extremely fast and everything is still quickly at your fingertips. Very impressed with it.
I like them, it adds a lot of character unseen in other forum software. This is because they are organic looking rather than sterile modern icons.
I actually didn't notice that they're doodles... but I really liked them when I viewed them. Looking now, I see doodles. My first impression on them was that they're a very nice touch to access the main areas quickly.