Small things can always be improved–for instance, with a good dynamic GI system the lightmaps would pretty much go away and it would save many hours of work. But each game is always so different from each other that while you might be able to make tools that can make a specific game easier to make, it won’t work for all games because they each have different requirements.
And you can’t really argue your point when you don’t have any experience and are unwilling to learn.