What we're missing in front-end development is more abstracting away solved problems so you don't have to think about them ever again.
Shared frameworks and libraries do help significantly with this but the fact that they still undergo substantial churn tells me they haven't completely solved the problems they address. When's the last time you needed to drop down into Assembly to fix your JavaScript? Probably never—you can operate at that higher level, which lowers barriers to entry and increases productivity for developers. (Put your hand down, you wonderful machine code hobbyist, you.) In contrast, we still "drop down" from web app components into JS/HTML/CSS all the time.
Shared frameworks and libraries do help significantly with this but the fact that they still undergo substantial churn tells me they haven't completely solved the problems they address. When's the last time you needed to drop down into Assembly to fix your JavaScript? Probably never—you can operate at that higher level, which lowers barriers to entry and increases productivity for developers. (Put your hand down, you wonderful machine code hobbyist, you.) In contrast, we still "drop down" from web app components into JS/HTML/CSS all the time.