New areas of lattice do develop but not in response to physical effort. There is great disagreement among ophthalmologist, even specially trained retina surgeons, about which areas of lattice to treat. You are wise to consult your retina surgeon. Generally if not holes, tears or traction not treated especially inferior. Superior lattice, because of gravity, is at higher risk of causing RD than inferior. Superior outside (ear side) is more concerning because over the macula.