I'm pretty happy with it the way it is.
Unfortunately, like in many things, when you increase one thing on a car you typically decrease something else.
more power ends up with less economy
better handling ends up with harsher ride
more sound deadening ends up with heavier car and then less economy and more expensive car
fancier materials ends up with higher price
more gadgets ends up with higher price
and on and on.
To me the CX5 is a great balance of all the possibilities of what it could be. I love the handling but it is still decently smooth. When I stand on the gas it will get out of its own way but after around 1000 miles the computer is showing 31.9 mpg (haven't checked to see how accurate it is yet). It is plenty quite for me and the interior is a great place to be without it costing $30,000+ There are places I can see where they might have pinched a penny or two but if they hadn't it probably would have ended up being too expensive for what it is.
I actually like the way it shifts in auto. It annoys me more when cars always want to downshift at the slightest attempt to accelerate. I used to always want to shout at my pickup "I just wanted to go a little faster! You didn't need to downshift 2 gears" as the engine would scream and then finally upshift 1 gear before finally settling back into the gear it was in to start with.
Granted having a sport button wouldn't affect the way it drives for me in regular mode but it would be another expense added to the car. A small expense, but if everyone got their small items added it would add up fast.
It is fun to take into corners but more than that it is just super comfortable. I got stuck in traffic on the way home yesterday and just really didn't care. People were doing u-turns to go the long way around and I usually would do the same but figured "I'm comfortable, we are moving a little bit and in 5-10 minutes or so we'll be around the wreck so for now I'll just sit here and listen to music" Because if I were home, getting to sit in a comfortable chair and listen to good music would be considered a nice relaxing thing to do
Sure there are times when more power might be nice but I wouldn't trade that for a drop in mileage. Aside from saving money on gas I love feeling a bit like I'm giving the finger to some of the countries that hate us yet are happy to take our money for oil.
With all the trade-offs required in car development we end up with a wide range of cars that offer much different end combinations and no single car can be all things to all people. Which is good because it would be really hard to find my car in a parking lot if everyone drove a CX5