Please stop trying to solve problems by introducing new tokens to create a new hype. Burning vouchers to get 20% discount on these features should do the same effect in the long term because there will be no extra DEC burnt in a long run even if we introduce DEC-B token. DEC spent on Guild, land, skins etc is already burnt or can be burnt when they are implemented. In a long term, it's the same. The only difference would be that it creates a spike in DEC price in the short term. After the hype is over, it goes back to what it would be if we burn vouchers to get 20% discount on these features. This just encourages burning extra vouchers and doesn't help reducing the DEC supply in the long term.
You can argue that the situation is different for mini sets because it was going to go to DAO. Then, why don't you just make a DAO vote to sell future mini-sets with DEC and DEC spent on the next mini set should get burnt? Why do we need a new token for this?
Another reason why I don't like this idea is that we would need 3 tokens to buy mini sets, DEC or SPS + VOUCHERS + DEC-B tokens to get the best deal on mini sets. This will be just absurd. Spending vouchers like coupons makes sense but 3rd one doesn't make sense at all. Is it a good new player experience when you need 3 tokens to buy a pack from the game? New players would just spend credits to buy packs from the market instead of buying them from the game since it's too complicated for players without much crypto knowledge or hive knowledge.
This will also create a repeated bad situation where the game makes future promises but late on delivery. If the land, skins, mini sets get delayed, the utility of this token will be delayed too. The price of DEC-B can go down a lot because the promised utility is being delayed. That will cause another wave of negativity in the community.