It doesn't matter how much data you gather, if your decisions are business-driven anyway.
Again, the problem is not the banlist. They will just keep printing pushed cards to drive sales; if a problematic combo arises, they will just ban the older half; if the card is problematic by itself, they will wait to ban it until they've emptied their stock, the same way they've been doing with other formats.
On the other hand, RC haven't banned anything relevant for years, so it's bad either ways. In fact, the day they decided to actually ban something, they got publicly arrassed, so it's three-way bad.
The problem is rather that they will change the rules, take all sort of crazy decisions to keep selling cards in the short term, regardless of the long-term health of the format.
The same way they've been trying all this time, except there won't be RC anymore to stop them.