My dad just a few months back traded his '07 KC SE for a new Colorado CC LB Z71. Let me tell you, that is one nice friggin' truck. Rides like a car, tons of power, and turns sharper than my short bed CC Equator. Here is what I like over his that make me want these things in mine.
--Armrest as said many times
--CC underseat storage. What we have is nice, but the Colorado has larger sections, allowing for things such as a tool box much easier.
--Ride height. I have my seat raised all the way up. I hate not having a "commanding" view of the road. I'm 5'8. But by doing so, I bump my head on the roof very easily getting in and out. Simple solution, let the truck sit higher.
--Off road stance for the CC LB just like someone else said. I'd have a long bed if they didn't look like a low rider.
--Two piece window in back door. I prefer in channel vent visors and they just look silly on the 2nd gen with the split.
--Interior. Softer touch. I don't mind plastic, but EVERYWHERE is crazy. It scratches like crazy super easy. Give me a soft armrest, door rests, etc.
--MPG. I drive 40 miles one way to work. Partly stop and go, partly 65mph 4lane. I avg 17mpg. My dad averages close to that in his Colorado all stop and go. I should easily be hitting 20 myself in my mind, and I pull out slow, don't gun it etc.
--LED and/or daytime running lights. I drive with my lights on even sunny and 90. Annoying to have to cut them on and off. Either daytime running or have them like my wife's Kia. Shut off after barely a minute, not 10.
--Oil filter. I had a Kia Sedona van that had it right on top. The Colorado does as well. It doesn't have to be on top, but a better way than what we have either taking the whole skid plate off or scratching my hand and making a mess.
KEEP
--Grab handles. I love having them A-pillar and roof as well as B-pillar and roof. I hate getting in and out of my dad's Colorado because he doesn't have them. Handy for my kids and wife as well.
--Floor mounted shifter. I hate column shifters. With a passion.
The truck really just needs refined. This is my second 2nd Gen so obviously I like something.