The big question is: what should be the new consensus rules of testnet4?
How about an annual replacement? Each testnet can last 2 years, so you don't have to change things during testing, but each year a new testnet starts so there's never a shortage in testnet coins. Testnet4 can start today, Testnet5 starts next year, and 2 years from now when Testnet6 starts, Testnet4 ends while Testnet5 still continues for another year.
I don't know whether any of you run testnet full node, but i just found out my testnet full node has total size 71GB.
I haven't used mine since January, and back then it was only 34 GB with 1.7 GB
chainstate. Is that caused by Ordinal spam?