No offence but I'm not too impressed with this update. A few things:
1. NiMH compatibility: IMHO, this is redundant. I had the experience with such capability while using the older VC2+ and didn't feel confident about it. If I remember correctly reviewer HKJ also made similar concerns with the NiMH charging strategy.
So instead of making a charger "universal" why not just concentrate on just one charging strategy (ie. LiIon) and optimize it onto such charger?
2. USB-C connection: Again, is it absolutely necessary? Or is it being implemented just because of popularity? AFAIK a USB Micro-b connection can still implement QC2/3 charging (5V/9V/12V), if any connected USB charger permits. IMHO, really no need to implement USB-C port unless if absolutely necessary;
3. "2Ax1/1Ax2/0.5Ax2 are available": How about manually selectable charging speeds, down to 0.25A or even lower? With the VC2S/4S, reading from HKJ's reviews, there's a tendency that smaller cells can be accidentally charged at higher charge speeds. Will this happen to the VC2L as well? On the original VC2 the max rate is 500mA but it can adjust itself from 100-500mA AFAIK depending on battery.
4. When devising an update to the VC2, why not start from the VC2S? IMHO the current model VC2S deserves more of an update with the sole purpose of being protected 21xxx-compatible. Same thing goes to the VC4L -- it should be a continuation to the VC4S instead.
I've been using the original VC2 for some years now but have no plans on replacing it. It's not perfect, but it still does the job decently while not giving me too much worry. If I need to acquire another VC model that would the VC2S, but NOT the VC2L -- especially, as long as protected 21xxx batteries are out of my usage scenario.