If you implement testing of random building sizes as advocated,
undoubtedly you will run into interesting data. Perhaps you'll find that using spacings of 8'
on sizes above a certain benchmark and that 6' spacings below the benchmark size is less
expensive. Maybe not. Perhaps you'll discover that Spacing Method is less important when you
have a number of openings than when you don't. We can't say. But what we can say is that
you are never going to really know -- you may suspect, but you won't know -- until you try a
handful of random buildings, vary the settings, and see what the effects actually are.
You may have looked at this product as a way to implement your price book, and if it didn't fail, maybe use it to do some small variations or perhaps, with time, do some more designs. But construction is highly variable, and your experience says that software can't really do the job. But... think about this a different way. This is software. In concept it's no different than a spreadsheet: change this data point and recalculate to see the effect. It costs you nothing other than a minute or two of your time to use it this way. You can test any building easily and recalculate the effects. Just like a spreadsheet.