Well, yes, there was a CONFIGURATOR, but it wasn't a spread sheet. In fact, it's probably still around.
The original was written in Unix, and a later version was developed for dealers and was Web Based.
It would allow a sales person to enter the parameters they were trying to meet and would "CONFIGURE" a Legend/Magix for them, with prices and things.
It would not allow you to "over-config" a system.
But, back to this design.
I know you can leave blanks, but I wouldn't.
Also, is the layout shown the one you have now?
If not, I would probably recommend a few changes.