magcolo said:
Project sekai event tags were suggested before knowing umamusume has them, their creation was a different story. And sekai has unnamed event costumes and event story fanart is fairly common, so they're not very comparable. Or maybe Umamusume has these too, then someone can be in defence of its event tags. I assumed sekai infuenced ensemble stars for the two are closer in genre and format and fanbase, but maybe it's umamusume, it was done without discussion afaik so idk.
Well, direct influence can be both explicit and implicit, and in this case I meant implicit. By the time Project Sekai got its event tags starting from September 2022, Umamusume had already gotten 15 event tags. Before you created the first event tag in the form of close game/OFFLINE on the 23rd, Umamusume and Idolmaster were both brought up on the 20th (forum #221856). Even if the idea of event tags were suggested before knowledge of either of those two having them was known to the thread, the fact those two did have them gave the idea of creating event tags precedent - and it helps that both were properties with some connection to music due to their idol elements.
So, Idolmaster -> Umamusume -> Project Sekai -> Ensemble Stars!, in terms of the spread of event tags.
The aspect of precedent is likely why sadodere, the user who created the Project Sekai thread that led to the event tags, eventually decided to take it upon themselves to spread event tags to Ensemble Stars, starting back in June, with no discussion needed.