Brad, sorry but you will not likely find a very easy time getting ANY new classes in the SCTA rule book. The simple reason is if you can't find a class to run in under our current structure then this might not be the organisation to run with. We have plenty of classes, we do not need more.
However active SCTA-BNI member can propose a new class to the SCTA in odd numbered years, i.e. 2017, 2019, 2021. See the page 1 of the SCTA rule book.
You can also do a search on this topic, there have been some very long threads on the subject.