Q2 and the fellow sentient hacker animals used to communicate using mono-syllabic shrieks of variable length. Thus, they wanted a 2-dimensional audible speech system, and were given one based on consonants and vowels.
Moreover, they preferred "modern" English over the alternative (Esperanto?) given English was sexier and more interesting.
Native speakers of Japanese often confuse the "L" and "R" sounds.
I think the 3-D-colour-space ( RGB , HSV , CMY ) was introduced with the Milky Way galaxy, but with some catches like "The dress". I see the dress as white-and-gold on my desktop Linux screen and saw it as blue and grey on a friend's smartphone.
During Englishtants times, the universe was a greyscale 3-D grid, with larger-or-smaller sub-grids, and various alternative layers . Before that, it was binary ( "black / white").
Some layers are:
"urban Earth"
"ecologically hostile earth"
"world conventions ('con') earth"
"mass-production earth"
"warzone earth layer"
"wildlife-friendly Earth layer"
Internet spam earth
Street crime earth
cybersecurity / cracking / etc. earth
parody lawsuits and litigation earth