I miss Nano dex, such a development stopped due to lack of trades is nonsense. If the traditional exchanges make certain moves against its customers, the dexes would take all the trades.
I can't recall any DEX based on Nano. Are you talking about Nanex? If so, I think it'd be appropriate to let you know that it WASN'T a DEX, it was only a centralized exchange with majorly NANO pairs. Moreover, it wasn't affiliated with the original Nano development team.