In my opinion: the styles for the bottom of lowercase i and l should be unified across all 5 Monaspace typefaces (Argon, Neon, Krypton, Xenon and Radon). That is, lowercase i should have horizontal line extend from the bottom to both the left and right in all typefaces, and lowercase l should have horizontal line extend from the bottom to the right only (and not the left) in all typefaces.