Currently, there is no proper way to use any of Space Age assets in the mods that don't depend on it. For mods that want to use them, this is a hurdle if they don't depend on SA, especially for things like Space Exploration and addons for it that are strictly incompatible with SA. In 2.0, it is ...

Currently, I'm trying to update Space Exploration Integration mods, as their author, xkyouchoux, stated to not planning on updating mods themselves

I've encountered a problem that I don't quite see being brought up - relative paths are now broken, not allowing the previous trick of using "__base ...