Northridge isn't going anywhere, Troy Christian leaving? Why?
Lehman is, by far, the smallest school and would be the one leaving if anyone. Obviously, MSGA must be from Lehman or that area, Brookville and Northridge are very easily accessed. Greenon is an excellent choice to add as is Northwestern. No Shelby or Mercer County school will join the TRC. They have an air about them and rightfully so.
The TRC needs to stay as-is for a few years and perform on a regional level and do it very well. The WOAC will likely have a team, Tri Village, compete for a state title this year.