Have a look at the attached db based on yours. You will begin to appreciate how difficult it would start to get. I've done the ordering and hiding of the columns.
Good thinking with the tables, but would this work in a multi-user environment? Remember, the backend (i.e. tables) is what users would have constant access to.
Also, in programming, there's such a thing called code-reuse which I'm sure you're familiar with. Your code wouldn't be easy to manage.
