"If shield rechargers or capacitors need a buff, then we’ll simply change the config values."
From the patch notes, and this is essentially exactly what i've heard before regarding this patch, any further buff/nerf to shields once SSU's were gone is pretty much going to be handled by the config values (which means yes you can mess around with starmade/data/configs/BlockBehaviourConfig.xml and find a balanced shield config to send onto one of those yellow name people if you'd like, this is something very much on peoples minds right now because the shield phase dynamic just changed a whole lot)
tl;dr I highly doubt an Aux shield block is necessary or really being considered, however balance changes to shield cap/recharge are quite likely.
As for small ships needing a buff?
builds ships and try and fight with them you'll see why, it's pretty much too obvious to explain but they're already so much stronger by weight, I reckon you guys pushing this would have fun for about a week until you start seeing the problems yourselves (that is if you actually do PvP, and not just "weapons tests")