Comment by humbledrone

There are a lot of advantages to 2D -- you could simulate more objects and more complex interactions with the lesser computational demands, and as other comments say, it will likely be way easier to build a better GUI. Think about how many compressor VSTs there are out there, and still people keep making them! And a 2D Anukari could be much more different from 3D Anukari than most compressors are from one another.