1. Change takes a while: I suspect it will not be that simple.
2. Perhaps, this will lead to an academy type of program for the girls
3. The "off" season could be spent conditioning: weight lifting, running, etc. working on fundamental skills that always need to be practiced and even position specific training
4. A good club will find ways to set up high level scrimmages. This might, also, be a good time to enter big tournaments.
5. What about 3v3, 4v4, 6v6 tourneys?
Just a few ideas from a simple person. I am sure there are great soccer minds that will have even better ones! not to mention ways to implement them!