The worst decision for my family was WDW's pennywise and pound foolish monetizing of shorter wait times by introducing ILL/G+... while making changes to staffing and capacity that it knew would increase standby wait times, and structuring queues to ensure that standby guests would be able to see (and be demoralized by) just how many lightning lane guests were gaining priority access, all to further incentivize ILL/G+ purchases.
Of all the changes, downgrades, and cuts WDW has made in the 10+ years we've been visiting as a family, that was the one that eroded the quality and pleasantness of our visits the most, and broke the proverbial camel's back as far as us wanting to return. We have no desire to deal with the time-consuming hassle and extra expense of ILL/G+, and no desire to deal with the time-consuming hassle and [still hugely expensive] exercise of waiting in standby lines that WDW has intentionally made longer and slower -- either way, we lose.