Sonic himself kind of looks alright here

Some diabolical ground texture work in other screens, reminds me of racing games where the devs just figure you'll be zipping by too fast to notice.
I know they're saying the cartoon look won't carry over into the main series, but I still think its pretty bold and ballsy. Can you imagine Nintendo or Disney fucking around radically with Mario or Mickey proportions?
All of this has got people digging out some nice classic art, like this style guide too

I like the way you can make out simple geometric shapes in the old style characters. They look a little more timeless and you can imagine how logically they drew newer characters like Metal Sonic and Amy etc. This Sonic Boom style is totally different, anything goes