Sounds like reward tracks mixed in with map currency vendor, much like the pip mechanic in WvW.

Very time gated at the beginning, even for all time veterans, but then you have amassed way too much currency because you get it by doing your thing anyway. Just this time you won't have much surplus because new stuff will keep adding on.

Not the worst neither the best reward system, pretty much in line with GW2's nature; do your ting and save currency to buy the shinnies you actually desire.