It was a necessity. After zkSNACKs handed over development and maintenance to Turbolay and me, we inherited a set of servers with a massive bill—prepaid for just two months—that we could never afford. Plus, coordinators needed to be operated by independent freedom fighters who couldn’t afford big servers for free coordinators. So, we had to refactor the software: enabling it to run without a full Bitcoin archive node, optimizing block filter delivery with a database and smart caching, improving Tor circuit management, reducing the size of cryptographic proofs for credential verification, etc, etc, etc. We are still working on that direction, it is just that we need to release also features that make users willing to upgrade, that is limiting how fast we can move on.