I do agree that Code is slow compared to other editors, but that is because Code ships with a ton of IDE features turned on by default. I feel that many people who are quick to cut down Code’s speed haven’t properly disabled the things that make it slow (items that don’t exist in the other editor they are comparing it to).
With that being said, Code will always be innately slower than anything non-electron. Native apps have that extra speed advantage, but that doesn’t mean that all editors written in Electron are automatically “heavyweight” in my eyes.
Anyway, I don’t wish to further push this. I do hope someone can jump in here and summarize the larger additions to ST4 that is justifying a new version number. I’ve always looked at ST from afar. The main reason I haven’t purchase it so far is because it seems to lack some necessary features that I come to expect from an editor in 2020. I mean no disrespect by that. From my understanding, ST is developed by a very small team, so I get that it can’t move as fast as other editors, but I do hope that v4 closes the feature gap between ST and other modern editors.