What about the current ecosystem is lacking that made you want to write a new one from scratch? (gpui, Dioxus, Slint)
Dioxus uses webviews for everything. Slint has invented their own set of UI components, so slint apps don't look and feel like anything else. As I understand it, gpui is somewhere in the middle.
If you run an app using my framework, I want it to feel like a completely native app that was made for that platform. It should look like any other swiftui, cocoa / uikit, winui, etc application. Native shortcuts. Native controls. Native look and feel. Small binary size. No electron. No webviews.
It's just not that hard to link to the system's UI libraries.
Are you concerned that as SwiftUI and Jetpack Compose continue to become the preferred native UI frameworks on Apple and Android respectively, you're going to need to figure out a way to bridge to them from Rust?