You shouldn't focus attention on player models & animations: they are only placeholders at the moment They will be replaced with models of older sister (Big J) & little brother (Little J) when the time comes & their animations will be tweaked.
As for JJ&BUM effects, the levels are still awaiting ppe (mostly bloom but I would also like to try how some sort of depth of field would fit), shaders & more particle effects (not only level but also character based).
There was some talk about the game's hint system but nothing is decided at this time. I was suggesting a level-map that would have important parts/objects highlighted.
As for transparency, I must admit I always liked partial-visibility concept but I can't say that this aspect won't be changed until the end of development.
