It looks really wierd when different textures have a different amount of pixels and it also doesn't look good with the vanilla blocks. It this intended or will it change? Change the title if it isn't a bug

Intended

Why do you want 32x32 that doesn't look good next to any other blocks? Please change it

They look crap in 16x16 and are hard to do. If you want it changed, do it yourself in a resource pack. That is why they exist.