Lsp can be used with any IDE, better markup language (static typing, proper module concept), rust and JS APIs, markup compiled to proper C++/Rust AOT, compiler can do asset optimizations (todo) - for example:).
In short: we try to do one thing (UI) and do it well :)
The use of the Qt backend is only temporary to get native style quickly on every platform. In the future, we would use a native windows and mac bckend.