I do not know if it's possible, but I have a plugin that works in 1.2.5, and I want it to work in 1.3 ... I am looking for a solution, so I propose a such thing, in search of a solution.
I'm not a coder, but I don't think it'd be possible for a single plugin to make all other old plugins compatible with the latest version. If such a thing was possible, it would have been made a long time ago.
I think I have one for you! Isn't like, one of the big benefits of using an API the fact that it almost never breaks?