While I don't necessarily NEED a multi-material print capability, I really would LIKE the ability to seamlessly print something with a dissolvable support material baked right into the print job. (Added colors/other materials would just be an added bonus.) This video convinced me that I NEED this... heh! I held off on ordering the original MMU and I am glad I did. It appears that Prusa has completely redesigned it to address a bunch of issues that they had with the original design. The new design is simpler, appears more reliable and supports 5 materials instead of 4. They are back-ordered on this MMU 2.0 kit till November, so it'll probably arrive right around Thanksgiving. I don't mind, it really looks like it is worth waiting for. I also had a $20 discount code from their printer survey I wanted to use up anyway.