1. Solid coding AI integration with frequent improvements. Sublime Text at best gives you an option to plug an LSP with modest capabilities. It's behind the times.
2. Small community, infrequent extension updates.
3. Limited UI capabilities. Extensions have to contort hard to fit into available extension points.
What's your vision of ST future?
1. There are several plugins that allow AI integration 2. There is an active community on https://discord.sublimetext.io
3. From what I can perceive based on Sublime HQ's responses, it's main focus for Sublime Text is simplicity and to be a text editor. You can notice this if you look at the banner text in the website; it says "Text Editing, Done Right". And while it is mainly used for code and most of its users are developers, it tries not to be. However, it does provide people the ability to extend it however they please.
Overall, Sublime Text is indeed not as fully featured as VSCode because it is not supposed to.