*raises hand* my 2012 too! And it still does it!-If your automatic lurches randomly at a complete stop, it needs to have its clutch packs changed. Most common on 2013-2014s.
The Cruze is the only car I have driven where the temperature gauge goes backwards with the heat on (and not on full blast either)!-Yes, it takes a super long time to make heat on a 1.4 turbo in the winter. No, your thermostat is not broken. Best thing is to drive with heat OFF til the engine hits 1/4 temp, and then use fan speed 2 or 3. Full speed will drain all heat back out.