Not much of a things that aren't there at all, but polishing existing libraries would be really useful. Many of them have substantial gaps in features. Of the t

Not much of a things that aren't there at all, but polishing existing libraries would be really useful. Many of them have substantial gaps in features. Of the things I looked at recently: email sending, network libraries, web frameworks, webservers (http2 and websockets integration is a big gap). Things I'd love to see implemented in rust: antl support, gegl, lucene, terminal ui toolkit, python, nltk