Interesting! My TPS experiences have been pretty lackluster, I usually consider more basic than most RIs. Maybe I need to try some of the newer ones. I agree that there are times that having the kitchen is my priority, so I'll book a TPS if there's no other option around (or it's at the right price point). I will say I've gotten some nice upgrades to 2 BR suites at TPS (Platinum member at the time), so that's better than nothing!
I suspect one's experience at TPS depends on the age of the property (probably true for most other brands as well). I have stayed at some newer TPS properties that are pretty nice. As I mentioned earlier, I value a microwave & a refrigerator more than other amenities, so I end up choosing the extended stay brands more than others.
LAX