SLC has a rule in place that you have to be a full member including all sports to be accepted, thus why UTSA is gone likely... That, plus if you consider the other sports, too costly to go to SUU for lesser sports... Not going to happen.

The SLC shouldn't add any schools, especially lower div ones, unless they already have a good foundation in academics and athletics, including a strong financial record and decent attendance record in football or other sports if bigger than football. The SLC will remain stagnate if it only looks at lesser schools or divisions to stay afloat.. I'd rather merge with another conference or go FBS and combine with a sun belt / conf usa type to grow reasonably.