Interesting. I don't quite agree. It's one thing to predict what general topics will be hot and popular this year. But that's not the same as what particular research problem will be important and have lasting influence.

There are a few kinds of important research. One is solving a well-defined, well-known problem everyone wants to solve but nobody knows how. Another is proposing a new problem, or a new formulation of it, that people didn't realize was important.

There is also highly-cited research that isn't necessarily important, such as being the next paper to slightly lower a benchmark through some tweaks (you get cited by all the subsequent papers that slightly lower the benchmark even further).