SvelteKit is really, really great for small to medium sized projects. The amount of stuff you get "for free" (prerendering, ssr, decent SEO) by using SvelteKit is so nice.

That being said, I definitely agree with the sentiment here that the file based routing is sub-optimal and I think the hurt goes up exponentially with the size of a project. I've also found that straying off the opinionated path even a little gets you in all sorts of trouble almost immediately. For me it was trying to add a SvelteKit app to an existing Nx codebase, did manage to make it work in the end luckily.

Btw, if anyone has found a good solution for creating an OpenAPI spec for SvelteKit server routes, let me know. :)