The C1 - D8 comparison is interesting in that both ladders show a great disparity within the respective leagues. That is in D8 obviously PAC are flying with TTG and GG playing well whereas Hope Valley, Salisbury and North Haven are struggling. Similarly in C1 Adelaide Uni, Rostrevor, Goodwood and Unley seem to be going very well whereas SPOC, Salisbury North and Gaza are struggling.
My suspicion is that if you made a hypothetical new league (ignoring the obvious logistical difficulties of:
8A - Adelaide Uni, Rostrevor, Goodwood, Unley, PAC, TTG, Golden Grove, Old Ignatiains, Port District
and
8B - Blackwood, PNU, North Haven, Salisbury, Hope Valley, PHOS Camden, Walkerville, SPOC, Salisbury North, Gaza
you'd get two very even leagues.
So disband Div 8 and create two new C grade divisions? Go back to having C1-C6 with promotion/relegation?