I would kill for some sort of integration between Remarkable and Obsidian. Both are excellent tools and the Remarkable is great for sketching on the go. I just wish I could keep both in sync somehow.
It's still in beta for now, so it's definitely not flawless, but it does work! You can choose which files from your tree to sync, they will appear as pdf files in your vault.
When this gets to reasonable stability, this may be enough to get me to buy ReMarkable just for it. It might be worth seeing if they have any sort of referral program. "Buy ReMarkable through me & get X months syncing free!" type deal.
A dream would be first-party integration. Syncing from one to the other is one thing, but a first-party obsidian application running on the ReMarkable? I'd let ReMarkable hire me to make this happen if this is something they'd be interested in
I'm not 100% certain about quick sheets just yet, I'm going to do a more thorough test soon, but notebooks _are_ supported as of last week, the Roadmap hadn't been updated yet.
That's one of the reasons i went with an Onyx Boox tablet instead of a Remarkable - that way i have the Android Obsidian app, in sync, and i can sketch on it (with Excalidraw, i haven't tested Canvas yet).