There are almost zero formal jobs in the industry for that kind of educational background, I'm afraid.
The most likely place you'd find a job that utilizes those skills would be in the economics analysis areas occasionally employed by studios that ship large MMOs. Those "departments," if they exist at all, are typically very small (often only a single person) in size and you won't likely be getting that kind of job right out of college. Because the economics of online computer games differ somewhat from the economics of reality, studios that have those positions will prefer senior people who also have other experience in the games industry.
I hate to break it to you, but in that position you often won't have that much creative input either. Of course this varies from studio to studio, but I wouldn't hold my breath. Additionally, you seem to be somewhat out of touch with the reality of the games industry, which is one fraught with crunch and unpaid overtime. If you're looking for a leisurely life in this field, you probably won't find it easily. It exists, but it may take you a long time to get there.
This isn't to say that you won't be able to get a job in the industry. Actual game designers tend to have a wide variety of backgrounds, because that helps bring a sense of well-roundedness to the entire team. You should know that in a position as a game designer, you may end up calling on the skills you learned in those college programs occasionally, but they won't be a part of the majority of your day-to-day tasks in all likelihood.
