Hi in my league we've already had a few situations where a VSC has triggered within the last 3 laps and although the elite tier is active (all managers below 30hours since last activr today) one person had a suspension failure causing a complete halt to those actually racing. With the option you can at least choose if you want the variability the VSC introduces or all managers to have complete control over the last few laps which matter the most in close racing. Think in my league the car that triggered it was trying to stockpile parts and just got unlucky with the low probability of failure chance but I don't know the thresholds for when it triggers regarding the state of the car so hard to say.
The turning off of DRS for 1 lap can make and break what people are attempting and it's hindering those who are building a certain tactic. For example, If I positioned myself in second for the last lap around China when we're both out of kers to then have the turning off of DRS gifting that battle to the other person by pure chance.
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Additions Below