I read somewhere that ASSA will make you a custom sidebar for a sufficiently large instalation. Or probably if you just pay them enough
You can turn the sidebar end-for-end to get a new code, bu then the problem is getting keys for it.
There are only five sidebar pins and they seem to have five potential depths, so that 5^5 potential sidebar bitings, and I'd leave out the five that are all at the same cut.