Man this new update is pushing certain parts of this game into FEZ/Hyper Light Drifter territory, aesthetically. The new art and audio is incredible.
The wheel guy in the camp could use some animations to make it clear that it's like a slot machine in Isaac, maybe this is already planned but unfinished but I figured I'd bring it up.
I'm finding that the videos are encouraging me to use the nonstandard seeds more frequently, which is weird since I know most of them are the same as they were before! I think the "this may hurt you" text just scared me off those seeds. BTW, I think free seeds need some sort of symbol to indicate that instead of just no crystals.
I agree with @tehawesome that it feels like the game got a lot harder, but it's also been over a month since I played it last. We should probably play the new build a lot more before we officially declare it unbalanced though!