Idola seems to borrow a bit from PSO2, one striking feature being how the Machina race greatly resembles the CASTs from PSO2 and the Demons looking like PSO2 Dumans, not sure where the Lycans and Gnomes came from (I mean the Lycans were "made by the gods" but the Gnomes apparently happened naturally) and I'll be curious to see if they appear in future main series games and if their names will change like maybe "gnomes" to "squats".
Course, I wouldn't expect Lycans to be a playable race as much as possible character customization items will allow you to RP as one (many of which already exist in PSO2).
I just wonder if the supposed "gods" of Vandor weren't former ARKS accompanying pioneers or maybe photoners? (Demons were said to be created by the gods IIRC, it's entirely possible they found a way to create them without Harded's DNA).
I also wonder if maybe there will be a connection between Idola and NGS?