Looking at the Changes List, it looks like small shields generators will be better than large shields generators in every way, for instance, 50 HS 1 shields would generate 1600% of the base shield strength, as opposed to the 220% of a single HS 50 shield generator, have drastically higher regeneration (Because each generator is recharging individually? Or contributing to the overall regeneration rate individually? Is this the case?) In addition to being harder to destroy relative to their size individually, and having far more redundancy in case the ship takes damage.
Also, a question. In the post it says that a size 40 generator would take twice as long to recharge, but it isn't entirely obvious whether this is because it regenerates at the same rate as every other generator but has twice the strength to recharge or if the recharge rate varies depending on the generator size.