First for SC ODP, you would need to define what success is- holdovers, team success in advancing to ODP Nationals or player improvement. If its holdovers- that one is tricky to address due to the dynamics of the selection process. SC 92G beat Mississippi 3-2 while mostly resting a couple of players for pool games. Mississippi has 4 holdovers, SC 1. One of the NC holdovers didn�t start for her club team- behind other NC ODP players that did not get heldover. So it would be hard to design a system to make holdovers happen. Team successes are easier to address with more practices and training. The luck of the draw with your selected opponent in advancement games will often determine that potential success as well. SC ODP could opt for more training and practice but the costs would rise, along with the conflicts with high school soccer. Additional training sessions through the spring would mean high school players would be training almost every day. Injuries would rise and effectiveness would decrease. Additional summer training would conflict with regional preparation, camps, etc. Player improvement is already happening by training sessions, playing with and against top players in highly competitive games, etc. Additional training sessions training sessions would help, with the same problems outlined above.
SC ODP seems to have success in relation to states of similar size. Texas, GA, Florida and NC have much bigger pools and therefore it will always be tough to compete. The question is- what exactly would define success for SC ODP?