I've seen 2015 SV Trim levels with fog lights and advanced Tech packages. but never 2016 SV with fog lights.
Interesting. They may have gone the way of heated rear seats, although as a separate option I don't know why. They used to come with the Charge Package, IIRC.
Do any of the 2015 or 2016 time levels have turn signal lights on the mirrors? I've not seen any.
No. You will only see those on the 2018+ Leafs. The Japanese-built 2011 & 2012 Leafs have secondary turn signals on the front fenders, IIRC.
Do any of the pre 2016 LEAFs come with intelligent cruse control?
I've seen only black interiors on the SL trim levels.
The early, Japanese-built SL had a light interior, and the 2018+ can be had with white/cream leather. Between those, though, just black leather.
Ideally what I'd like to find is an 2016 SV with light interior, 360 degree camera and fog lights. does this combination exist?
I think so. Look for a Leaf with "Premium Package" and the light cloth interior. As for fog lights, ask your local dealer if the optional fog lights can be ordered for a 2016. The body is the same as the 2013-2015 cars, but they may have deleted the wiring harness.
I'm in Central Texas, with a <50 mile round trip commute. I am aware that I'll be hard pressed to find a southern car with great battery health, so my expectations are realistic, any comments from real world experience are welcome.
The 2015 has the most heat-resistant battery. If you can find one with a SOH over 94 you may want one. Otherwise, look for a 2016 that was built AFTER early 2016, and that has a 93+ SOH WITHOUT
the BMS update (the update tends to mask the actual SOH). A 2017 would be a better idea, though, as it would have a longer remaining warranty, and maybe a better constructed pack.