Not sure of the OPs location but a downside to the Leaf in very warm climates is the battery doesn't really have any thermal management, unlike some other brands. People that really drive their Leaf hard or use the QC more than once on a continuous trip can experience premature battery degradation. I'm pretty Chevy uses liquid cooling on the Bolt and Volt, not positive who else does. In a cooler climate Nissan's lack of cooling hasn't proven as detrimental. I personally wouldn't shy away from an S model but for maximum range the heat pump is probably nice to get more range. To me where a heat pump would be really nice would be on a PHEV with a rather small battery, say a Prius Prime or hopefully the new RAV4 Prime, unfortunately heat pumps on PHEVs are very rare, again I'm not sure who other than Toyota does it.
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a