These projects like rootstock are basically aiming to rival ethereum. But they are so far behind in development i wouldn't even call them rivals. It's like comparing a car prototype with a spaceship prototype. Not in the same league.
Not to mention that there's a high possiblity for them to never be integrated into bitcoin. Bitcoin hardly improve at all because the community and developing team are extremely divided. Mostly because of centralization ( mining, development and political centralized ).
