u/SockPuppetsUnite45: Does this mark the beginning of the end for bank deregulation legislation that is framed as 'right sized or tailored regulation'?

Unlikely. Tailoring as a broad and general concept is something that seems pretty logical: a community bank with less than $1 billion in assets and does mostly just basic lending shouldn't face the same type of regulations as a megabank with $3 trillion in assets. How exactly that all shakes out is very complicated (and, as you implicitly suggest, offers a lot of room for mischief). But certainly, this has likely made both lawmakers and regulators much less sympathetic to arguments from banks, say, between $100 billion and $250 billion in size, that they don't pose risks to the economy. — Victoria