The one thing I would say that is not suffering in the Splinterland ecosystem, are the Dev Salaries which kind of feel like the true priority #1. All the efforts now to bring in new players like Frontiers mode with tradable card rewards, the new miniset with an arbitrary SPS Value in an attempt to pump the price, Survival Mode, new Land-cards,... all kind of feel short-term gain -> long-term pain measures.
Reducing the SPS Staking rewards would be a good first step.
RE: Is Splinterlands slowly failing? The Hard Talks That Need To Happen