The Tag mode is probably PS5 exclusive, with a potential mod coming for PC after launch.
I really want to support Strive and buy it before launch, but since they announced a season pass and a $85 deluxe edition before state tax here, If I buy it; I'll buy it only once for whichever platform I end up buying it for (PS4/PC). I'm also considering buying the regular edition on PC and just buying the characters piecemeal if ASW does that this time. Granblue made me very wary about buying ASW games that aren't considered "mainstream" (Guilty Gear and DBFZ are probably the two main examples of that I can think of). Also am curious as to how long the PC playerbase will last once the game comes out, also because of Granblue.