Many of the problems I find difficult and “ugly” to write in meander boil down to 2 core reasons: The 1st one is “correspondence” (the gap between ?x and !x). I’ve written up what I mean by this here: https://github.com/noprompt/meander/issues/129 and would appreciate any feedback.

The 2nd one is the “unspecified keys” syntactical disadvantage: https://github.com/noprompt/meander/issues/130

Thanks @timothypratley I’ll take a look as soon as I can.