Reed and sue are not old,they are around the same age as they were when they were created,maybe by a few years,and Nightwing is still young.
I said stay young,not age,my favorite character Kon aged,but he probably won't be getting any older than dicks age by the time a new reboot starts.
Superman and Lois will NOT age "much" more than they are now,Jon might age,maybe to dicks age,which would be a stretch,but aging characters,that actually get OLD get de aged that's how it works.
Reel it in buddy,I liked some of new 52,lots I didn't,but it came and went,let's not kick a dead horse ok