Yeah, it depends on what you want to prioritize and value in your search engine. I’m coming at it from the angle that if you want to make a good, new, and different kind of search engine you need to do something fundamentally different than Google. No one is going to beat Google at their own game. Leveraging meta data is a very easy way to make something new and different, but it won’t be as comprehensive as Google. I doubt that someone doing what you described over a few months or year could make a search engine that anyone wanted to use.