Very interesting idea @julomat and I support the creation of the app as you described it.
Seeing events, news and community initiatives in one place would be very useful. I think that having an entry point into the ecosystem for marketing and onboarding purposes could be quite helpful.
However, I see a risk about future features and development strategy of this app and I agree with @nightwing that the more specific features it has, the more it will compete with the existing wallets in the ecosystem. In my opinion it might be right to halt the development of this app quite early, offering users who are interested in diving deeper into the ecosystem different app options that they can use depending on their interests and role, and not lumping everything into a single super-app. In that case perhaps it would be logical to advertise parachains in the app, but suggest that to use them they require other wallets to unlock more functionality?
As for discoverability and testing, in the neighboring DevEx topic it is suggested to increase Polkadot’s visibility in events and discussions. Perhaps conferences are a great starting point for research and communication with users.