I use the control center once in a blue to ping my phone. What do you use the control center for so often? And do you think there should be a dedicated button just for it with no option to change function of said button?
Regularly finding my phone (I don't carry it around the house with me!). At least every other day, Focus, Movie mode, Camera remote, mute. Flashlight is VERY helpful as well rather than trying to find my phone to do the same.
Less frequently but far easier to access through Control Center - Airplane mode & waterproof/expel.
The primary reason I got an Apple Watch for my spouse was because he'd constantly be looking for his phone and ask me to ping it from my MacBook, iPad, or iPhone. DROVE ME BATTY. That, and to get him to use it instead of his phone when he's biking. But primarily the Find iPhone feature.
I'd rather be able to set the side button to launch the Smart Stack or open apps or whatever I get now when I swipe up - and put the control center back to swipe up. The latter is much more intuitive and the new change adds no functionality.