Sleepy-girl representation is important
Layering 2D art into a 3D world with massive particle effects can be REAL hard to get right!
A big driver behind that (its a MASSIVE change!) is to help increase performance on lower-powered PCs and consoles, so we should get acceptable framerates on Switch and even Intel integrated GPUs now (I'll need to dig up an intel IGPU to test that on though...)
Heres an example of some of the fun issues you can get into when you try to mix 2D sprites with 3D worlds. Before we had SO many custom shaders to deal with depth and stencil writing and ordering hacks to try and get everything almost right. All that is now handled with a few URP Rendering features. Big fan, read more below for more details!