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lexus1, I hear you on the remote start. My last 2 cars ('05 STS, '07 Denali) both had this feature and I loved it.
I think the warm up time for the LS is fine. I do notice that if you manually set the climate control system, you can get warm air blowing faster than if you leave it on auto.
My other vehicle is a Ford F-150 - - it takes forever to warm up! I'm sure this has to do with the tow package and the thermostat that is installed to keep the motor running cool under heavy loads.