So, I've been playing for over a year and have something like 32ish agents, but there are still 18 - 20 or so agents I don't have, many of them season 1 like Miyabi, Ceaser, Lighter, Nagi, Jane, Qingyi, just to name a few.
Now, I know that there are new players who have had even less chance to grab these characters, and given what I've seen of upcoming release, I think the chance to pull some of these older/outdated characters will be even more remote, but they all have awesome stories with quality time or contact events that I'm sure new players would like to explore.
So, what I'm hoping is that coming with season 3, that maybe we can get a chance to just outright buy season 1 characters for something like 85 pulls each. First hit guaranteed , and make them all available, not just a select few. This way people like me who missed all the initial offerings and especially new players can have a chance to fill their rosters.
Hoyo still gets to make money on older characters without disrupting whatever plans they have for future game play mechanics, especially if they don't have to adjust the banners/bosses etc to accommodate older characters.