Anki is a very big and complex project. From what I've heard and seen, it's a mess and the only person who groks it is the main developer. I get why most people are unwilling to contribute to Anki. I've thought about it myself and I decided against it, preferring to tinker on my own personal flashcard project.

It's also a very old project where it's hard to enact change that you might want. So if you have a different vision, there's no way to realistically implement that.