Great insights which are worth all the effort for a proper system, everytime! Some setup engineers refuse to go the long way because they just seem too lengthy a process and might even incur additional costs. This is really worrying regardless of the nature of the event that the system is being used at.
The most recent VFA FDAs focus on lower power, precision, solutions more aimed at Successive Approximation Register (SAR) and delta sigma ADC support. Those will be focus in this FDA stability discussion - but the concepts are backward compatible to the earliest VFA FDAs.