Hina

To qualify for the list, the manga had to be at least 15 years old when the anime came out. Organized in ascending order by length of time between manga and anime. Each manga can only be accounted for once, so no remakes - those go on a separate list.

List is incomplete. Let me know if there are any big ones I'm missing. Thanks to everyone who has helped me add to this list.

Remake version: https://myanimelist.net/stacks/10193
Second remake version: https://myanimelist.net/stacks/58981

Upcoming/unreleased anime with potential to be absolute bangers and even game changing for the medium.

Basic Criteria:
- not a sequel
- Remakes are eligible
- Spinoffs are eligible if they are loosely related enough to the original.

This will be an endlessly ever growing and changing list being updated regularly, adding in new promising releases once announced and removing ones that have already started or finished airing.

https://en.wikipedia.org/wiki/Rotoscoping

Part 2: https://myanimelist.net/stacks/43396