Terrible idea for color-blind people. And I don't even mean severely color-blind, like when you can't distiguish red from green at all, but something more common and less severe, like deuteranomaly - where it's shades of these colors that are hard to distinguish.
Same. New to printing but haven't had a single failed print yet (only used PLA and PETG so far though), and the print quality is generally excellent. That said, it does not meet all the requirements of the OP.