That would honestly be the ideal setup; you want a reboot that can bring people in? See how Post-Crisis actually did fine with continuity, used “events” correctly, and focused on differentiation and strong characterization... and just roll with that, with at least one book that can float across eras and tell different generational stories.
You *do* need a good enough and meticulous enough editor to manage the continuity... or have a loose enough policy to be fine with saying something like “hey, on the off chance one of these stories suck, we claim the right to override it at any time - but we will avoid doing that as much as possible.”
Arguably the best time for modifying and adjusting the history of Gotham City was in the 90’s and early 00’s, when you could have Legends of the Dark Knight feature “Prey” with a young Batman facing off with Hugo Strange, or “Heat” featuring Batman and Catwoman having a tension-filled alliance in the past, or having Loeb and Sale tackle their “Long Halloween” story in a miniseries, and all in the day and age after Miller did “Year One.”
That’s the hits; you also had a bunch of Legends of the Dark Knight stories, “Catwoman Year One,” Batman Year Two, and a bunch of other stories that didn’t get much fanfare and were ignored or retconned later without much difficulty. Didn’t matter; people didn’t through a hissy fit over them existing or being overwritten.
Let writers jump around the timeline and have fun. Maybe even let someone go ahead and tell a literally decade long story with multiple Robins or Batgirls as they grow and age, and as Bruce picks up more mileage.