Hey, I have a question about old RBY lower tiers. I vaguely remember someone saying that in the beginning, OU viability rankings didn't exist and the OU/BL/UU/NU tiering system were the viability rankings for OU, which explains why early tiering systems had a lot of mons that did nothing in their "tiers", and that splitting OU viability from tiering didn't happen until Pokemon Perfect. Since you were around at the time, is this true?
But as simulators change around, rules get changed with them. My suspicion is if ADV didn't have a freeze clause, that was probably due to shoddybattle, since Cathy was probably the biggest driver of actually pursuing cart accuracy above all else.
Vapicuno might have a better memory than me for ADV history.