All the necessary assumptions are listed in the top comment though (assuming you can intuit my intentions for the 'iflet macro, etc.). It's by no means implemented. ^^
Also, I welcome any switch in the heiroglyphics that makes them more readable. In Penknife, where there are infix operators but no read macros, I'd probably represent #''y as "thunk:sym.y" or "sym.y^". In Arc, ^'y looks like a good choice. Maybe :y or %y could be the zapper (or some better-suited abstraction over setforms).