When we participate in many different testnet's, we learn how to work correctly with a particular network. What equipment to choose. How to set it up correctly. Whether it is a dedicated server or a VPS. We already have a rich and interesting experience. And we are ready to share it.
NuCypher: Come and Stake It Incentivized Testnet
Coda Protocol : Coda Public Testnet
Certik Foundation : Shentu Games Incentivized Testnet
Elrond Network: Battle of Nodes: Onchained
Bluzelle: Swarm Of Duty Testnet
Harmony: Pangaea Testnet
And we are also pushing an interesting IDENA project because we just like it...