Nope. I've heard that it's extremely difficult for developers to make changes to large games with huge communities, and honestly I can understand why.
The reason why an independent developer or a group of them can make "much higher quality" updates is because everyone has different preferences. When it comes to updating Minecraft, you're not just pleasing a small community of people, who, at any time can just switch to the original vanilla version. The version you're making IS the vanilla version. It's the default. Making Minecraft too "complicated" is what Mojang wants to avoid.
Minecraft's community is also extremely diverse, and if they added dozens of content packed updates every year or every few months, it would be extremely difficult for the community to keep up with said content. Minecraft is at heart, supposed to be a simple game where you can express your creativity freely.
Think of it like cooking a meal, at any time, you can add different spices and goodies to your masterpiece to make it more complex, but eventually it will become just an overcomplicated mess that is hard to understand, and more importantly, enjoy.
