Will we regret building our new site with Nextjs App Router? (manifold.markets)

Engineers at Manifold are looking for your opinions (and bets) on the new app router vs pages router.

I don't like the friction introduced by the app router. Even though the merits of layouts, streaming and React Server Components are clear. I have a stable site/app and don't need to migrate any time soon, I rather wait for something better. Which in my mind is something Server Side Rendered, written in TypeScript and close to the native DOM API.