Time travel crystals are also lootable now. I looted 10 off papoo mission points yesterday.
I think theyre meant to be cheap and very attainable, rather than rare and inaccessible to all but the rich.
NI based items would have been nice though. Heaven knows we have alot of crystals without much use. I had originally thought combinations of different types of time travel crystals would unlock different destinations, and that we would have to work together to determine what those combinations were both to get there, and get back.