&gt; It probably also helps that extending Atom is much more approachable given that it&#x27;s all Javascript...<p>I&#x27;ve heard this said before, I&#x27;ve had the opposite experience. ST offers a small api and it was easy for me to make something work with a single .py file. 
I gave up trying the same thing in Atom; the api is larger and lower-level. Admission: I don&#x27;t know coffeescript.<p>ST of course isn&#x27;t nearly as flexible, there are many things you just can&#x27;t do.