One concern I have, which I think falls under the new open source API development, is that the teachers and guides are not accessible to players. There is a teaching league, and it’s always empty, yet there are people constantly asking for and wondering if they can get reviews/teaching games.
There should be some sort of dedicated teaching channel, and perhaps a button at the top linking to teaching aids at the top, next to the “Puzzles” link. roy7 has made some updated shapes content, and there are OGS hosted aids such as “Shape Up” and that one 9x9 pdf. These should be made prevalent, along with easy access to teachers.
That said, I don’t think having a link to IWTG is good, especially for people who are inexperienced. IWTG only stresses capturing, and causes more issues than it solves.