Well, I don't know that the MCU won't be considered a classic, considering that it is one of the first major movie universes that has actually succeeded in managing a large number of characters and films. Sure, not every film in the MCU will be a classic, but as a whole, the entire thing will.
Star Wars will always be a classic, whether it gets stale or not, so right now, I think we're okay. And nothing says that Disney won't see the need to take a break in the future.
The way I see it is this: we're getting new Star Wars, and no matter what, that's great!