Honestly, I’m not sure I have an answer to that… it doesn’t do anything unique, but it does a lot of things really well.
Config is json driven (UI just updates a json file, so you can do more advanced things in the config that the UI doesn’t allow), it has the ability to have multiple types of tabs, i.e, a powershell tab, git tab, WSL tab, etc. It’s fast and not resource intensive. It’s constantly updated. It’s open source with a clear roadmap. Split panes is handled fairly well.
I personally really enjoy Ctrl+c being context sensitive. If I highlight something it copies, if I hit it at the prompt, it will behave like it does in Linux.
I don’t feel like I can sell anyone on one feature, it’s just stable, updated frequently/has good support, and is a great experience (so don’t complain about it). When I’m using something else, there is always some feature I wish it had that Terminal does have.
I didn’t even know it had quake mode or what that was. But if it works, great. Just one more feature to keep folks enjoying it.
For you it’s quake mode, for me it’s context sensitive ctrl+c. Everyone has their thing for their workflows to be optimal for them.