I'm supporting this. However, I don't believe any DEC to unlock cards strategy is a good one. Burning cards to unlock cards is the only way that makes sense due to the floating value of DEC creation to the ecosystem.
I would propose that when cards come out, they require a 10:1 unlock fee so we burn 10 existing common cards to unlock 1 soulbound common card. Six months after release we drop it to 5 cards to one. And once they go out of print it stays forever at 2 cards to unlock one like card.
Burning cards for cards is neat, sensible, and it has a linear and predictable benefit. The creation of DEC and the burning of DEC does not have a linear value to the overall economy and the card sets don't even have the same burn value in terms of DEC. Remember, the next cards that come out will be rebellion and so they will only have half the burn value of the current cl border cards. So speaking in terms of multiples of DEC makes little sense when a rebellion card costs half of a CL card to unlock even though they have the same impact on the economy.
Moreover, let's imagine for a second that we get a big influx of players with the marketing efforts. Let's also assume that bull and bear cycles remain a feature in Splinterlands. What if Splinterlands is really successful and gets 100k real players coming in and that pushes SPS to $5. All these players are getting soulbound cards that they are unlocking with DEC they got from burning SPS. How much SPS would need to be burned to create enough DEC to unlock a maxed common card? The burn value of A maxed common rebellion card is 1000 DEC. SO 10,000 would be 10x. At $5 SPS, it would take 2 SPS to unlock that card. TWO SPS out of 3 billion!
OK, so we have a bull market and millions of these cards are unlocked and the whole thing manages to burn a couple million SPS if we're lucky. Now we have an amount of cards that makes today's card problem look small and we will have burned almost no SPS in that time to get that many cards. So soulbound at that point solves nothing but to piss players off who want to see it gone.
Now let's change that and say every one of those cards required a burning of more cards than were unlocked. How different does that look? Every card unlocked has a linear and constant value to the ecosystem that isn't diminished by the game becoming more successful. Now when the bear market hits, we don't have a dump truck full of new unlocked cards because every card that was unlocked actually lowered the supply of cards overall. When the bear market hits, and players start to exit, we end up in a better situation than we were in before the bull market instead of a much worse position.
Burning DEC makes no sense and it could cause critical damage in the event that Splinterlands actually finds itself back in a bull market ever again.