As a developer and a writer,my suggestions are:

1.Support export rendered page to other format,e.g. html,pdf,png,svg 2.The above suggestion is about how to sharing with others.So it's good to procide a way to spread,e.g. every documents made can be viewed from a special url,if you want to make this be a platform. 3.Code blocks hightlighting.Suppose someone want to use teno like juptybook to share their research or other things,code highlight is the key for reading experience.