they didnt change anything about the scaling of his q. so if it was worth maxing before, its still going to be worth maxing.
but being able to hold his nado for 10 seconds it part of why hes such a huge lane bully. he can zone you from your own minions while holding his q for 10 seconds, and lasthitting himself with auto attacks.
also the e animation cancelling is taken down a notch at early levels by the slightly increased cd.
really, yasuo is a bit dominant at very early levels for scaling so well into the mid and lategame. he IS supposed to scale really well, considering hes a carry. so thats why theyre even entirely removing the cooldown on his e at rank 5.