Lanefan
Victoria Rules
Sorry, old chum, but you've got this backwards.Actually, I’d say it’s very much in line with 3e design, and isn’t terribly far off from 4e design (which despite popular conception was very much a direct continuation of 3e design, only further evidenced by the abundance of 4e style design found in PF2). What it’s not in line with is pre-3e design, or 5e design which revived a lot of pre-3e thinking.
In 1e your roll was always assumed to represent your best attempt under the circumstances, and a re-roll was not allowed unless something materially changed in the fiction. For example, if you try to pick a lock and fail you can't just try again; the assumption is that you already did try again and this is the best you can do. But if something changes, e.g. someone hands you a better set of thieves' tools, you can try again and get another roll.
3e gave us 'take-20'; which changed the underlying assumption from "one roll represents your best attempt, no re-rolls" to "you can (and thus would) keep rerolling until you succeed, so let's just jump to when you roll a 20 and have done with it".
4e, while dropping the 'take-20' terminology, kept with allowing rerolls until you succeed. 5e kinda kept it but is even less clear, as far as I've seen.