Similar to https://community.alteryx.com/t5/Alteryx-Designer-Ideas/Custom-Functions-in-AMP/idc-p/845446#M16381, it would be great to have AMP allow for custom C++ functions. Custom XML functions were added in 21.1 for AMP, so custom C++ functions would be the natural next step!
cc: @jdunkerley79 @TonyaS