I don't think you have to make new ones, just have the old ones from TDS have a similar chance to drop off all nameds post TDS and it should be fine. You don't have to redesign anything, just add them to named loot tables as an uncommon. I think that would satisfy most people's issues with things as they currently stand. They don't need to be any easier to get, just not require people to go and do obsolete content to get them. A bigger issue with the current situation is that in order to get these power sources you have to complete a long set of flagging tasks/missions to be able to access the zones they drop in. For returning players this presents an unnecessary barrier IMO. If the devs want the leave things as they are, then they need to unlock all of the zones in TDS or provide an alternative route to the PS.