Replaying old zones
Yes the rewards are worth it. Sure the raw mats there are lower tier but with higher level equipment you feel more powerful. Also the area tends to be more familiar since it’s likely took you longer to do the content there, due to learning the game, than in other zones. I barely remember some areas that I’ve map completed on but my 1-15 zone I know like the back of my hand.
RIP City of Heroes
Well, if you already have map completion and only want to farm, there’s not much point – yeah, rewards scale up, but if you wanna farm you’re much better off doing dungeons/chasing world bosses or running event chains in Orr.
On the other hand, I feel empowered revisiting newbie areas, remembering how hard I struggled at the beginning and how easy it all looks now and mostly not because of gear and skills, but knowledge of the game and my character.