Bob Hartig
EF5
It's possible to become too diffuse. By trying to cover everything, one can end up accomplishing nothing. As I understand it, the SO... series is defined by tornadoes and supercells, and it is targeted to people with those interests. Other weather phenomena may be interesting in their own right, but unless you wish to turn SO into a general weather series, those phenomena don't fit the niche. In terms of marketing, its wise to stay within the parameters. If you want to turn out other weather-related DVDs, that's great, but I think you need to keep such things separate from the SO label. That label has already acquired a certain identity, and with it some expectations of what it will and will not contain that shouldn't get confused or sidetracked.