I'd dearly love to see the Libertinus Sans and Serif fonts support Extended (Polytonic) Greek capital letters with Iota subscript (instead of just adscript), a rounded (Porsonic) circumflex for all Greek letters that have the circumflex, and with text critical sigla (i.e., characters starting at 0x2E00, e.g., ⸄ ⸇ ⸈ etc.).
I'd dearly love to see the Libertinus Sans and Serif fonts support Extended (Polytonic) Greek capital letters with Iota subscript (instead of just adscript), a rounded (Porsonic) circumflex for all Greek letters that have the circumflex, and with text critical sigla (i.e., characters starting at 0x2E00, e.g., ⸄ ⸇ ⸈ etc.).