Will the Incentivised Testnet return?

Hello, I’m wondering whether there will be a vote at some point on Cardano to reintroduce the incentivised testnet. I’m a bit confused why the ITN is going away… don’t we need a testbed for new proposals before they are instituted in the Voltaire era? Does Cardano have any way of testing new proposals? Surely we need something like this, in case a new protocol update doesn’t work as intended…