What did you learn from the first two waves of Testnet? Lots of knowledge about the ecosystem, features like programmable transaction blocks that ultimately change the rules of the game in terms of what you can do with the network, lots of ideas for new features that benefit the ecosystem and wallets. How is the persistent testnet different from previous waves, and what are the new features? Wave 1 was to bootstrap the initial network. The second wave dealt with staking, delegation, and helpe...