Thanks but no thanks, I'll stick to PyCharm/IntelliJ.
At least the latter is using RAM & battery life to do useful things, instead of just running a browser and a glorified web app.
Also, it feels like an insult to say Sublime feels "old and hacky". If using 500+MB of RAM for something Sublime gets away with 100 (or less) is considered hacky nowadays, then I'm not sure what to say. VSCode doesn't seem to do anything groundbreaking either - I had all of those features thanks to Sublime plugins since 2014.