You don't have to do it with the original devs' consent. It would be nice to get it folded back into the original but if that doesn't happen you can just have

You don't have to do it with the original devs' consent. It would be nice to get it folded back into the original but if that doesn't happen you can just have it as a fork (of some degree). Your idea does sound hard to bolt onto an existing client. Minimalist ones probably don't like the weight a plugin system will add, even if none are used. And clients that are open to having a plugin system added, or an existing one extended, probably aren't that minimalist to start with. Trying to get deluge to work with new python sounds like a good aim to encourage others to help you with it. Many people seem to lament the slow progress being made in adopting python 3. Try to contact past contributors and the current "maintainers". See which ones are open to the idea of using python 3. (This all sounds like far more work than I like to attempt.)