Cygames really needs to give Cafe's Friend a physical body... If only so she'd yuck it up with Mc-chan and their fruit of love the StayMc clan.

Agreed! I’d love to see how Sunday Silence would interact with her IRL children and grandchildren, like Cafe, Tachyon, Stego, Spe, or Suzuka. Could make for a lot of fun shenanigans!
I’d definitely also love to see how the dynamic between her and Mejiro McQueen would be like, considering the two were very close IRL.