Technically, any Digimon with [Retaliation] will benefit from the new Myotismon, but [BT2-080] Piedmon in particular can be a natural synergy. Both VenomMyotismon and Piedmon are iconic villians from the first Digimon Adventure anime series, and with wishful thinking Bandai might take the opportunity to give Piedmon a buff.
With both Piedmon and the new VenomMyotismon working on LV4 Digimons from trash, there is a chance that we will get a suitable LV4 purple Digimon in EX1 (another Devimon?) that works like magic. But until then, I'd like to think that the 12-cost to play a Piedmon to be too inefficient in this meta.