This sounds great to me. My only real concern is how long these series will be (which will dictate how long we have between resets of currency). If it's a period of months then it fine, but much shorter and there's not much option for leisurely play. I also wonder about old series. My thought is after 3-4 series have played through, they could start being rotated, with new ones added to the rotation as they're developed. This would let new players see the old series, and if there are exclusive cosmetic items, give players another crack at them as well. And if you don't need any of the exclusives, there's still plenty of catalysts and reactors to buy.