I like to keep things OEM on my truck. I like the OEM look and the fact that it is now covered under warranty. Not only are aftermarket kits not covered, but incorrect installation can further void the warranty.I don't know about the kit that you speak of, but OEM remote start that comes on the NNBS trucks is awful. You cannot control the heat or a/c, making it come on high, or a certain position. Example: There's 2' of snow on your truck. An aftermarket remote start will allow you to set the defrost on high or close to it, then when the truck is started by remote start, the defrost is on, windshield is warmed, snow goes away fast. With OEM, you don't get that, and the truck is still cold because the heat is blowing out the vents and the fan is on low. Same with summertime, it barely turns the a/c on. They definitely didn't have the drivers comfort in mind when they designed this. Other aggravations that OEM doesn't take care of:
If CEL is on, remote start won't work
It only has a 10 minute runtime
You can do "valet take over", or "short stop", or "idle down mode" with OEM
(those modes allow you to place the truck in remote start mode, remove key, exit truck, and lock doors, all while it stays running. That feature is very handy, not only for security purposes, but for comfort as well.
I don't have snow in my area, but I have never had a problem with the distance of the remote start, or the remote start not reaching the truck from inside a structure. Last week I started the truck from 500+ feet away, and I routinely start the truck when I'm inside a two story steel frame and cinder block structure, which allows no cell service into the building.
I'm certain the truck senses the outside temperature and takes action to create a comfortable climate inside the vehicle. I had an '07 Esky previous to this truck, and I think it heated the steering wheel and seats when it was cold too. If equally equipped , the trucks should do the same, as well as HVAC countermeasures.
I wasn't aware of the other shortfalls you mentioned and I can do without them. Though I do know what it's like to have something, then know what you're missing.
My CEL is on now and my truck won't remote start. This pisses me off.
I'm just defending my decision to go with OEM here and to clear up some confusion. I don't dispute the fact that aftermarket units that have these features are superior, but personally I worry about long term durability.