Tokenz system was bad.
It loses the random thing.
You collected gold and were sure of getting a big collector. This is as bad as buying directly what you need. No more surprise, frustration.
Players always leave and come... and leave... and get back.... its always the same.
If actually there are less players is because of less entering players, due to a lack of marketing campaigns, simple as that.
I understand what Saga says regarding this topic about few players playing DTs, but I agree bith benusko when he says that the Cryptocoinz rewards in DTs are too low.
You need more than 22 DTs to buy just 1 pack, and that is considering you get Top 10 in every single DT, if not you may need 30+ DTs. That's an insane number considering every single CR are in those packs, which means you could actually get only around 100k in value before having to start all over again. Sure, you can get a super expensive CR as well, it's completely random, but there are more "cheap CRs" than "super expensive CRs", making the risk kinda high.
Having to play and get Top 10 in more than 22 DTs to probably end up getting a low value CR doesn't sound good, since you can get 100k in 5-6 DTs no problem.
Saga is right, lack of marketing campaigns does affect the amount of players who play UR and DTs, but the Cryptocoinz rewards in DT (Or the Cryptocoinz system in general) are not that good. It may not be worse than the token system, but definitely not better.