Here is my list, based on my taste as an expat from Hong Kong, let me know your list too? 
Brunch
Banana leaf rice-1 Hartamas
Red bean bag - Publika
Mandarin Oriental Lobby Lounge - KLCC
Chinoz by the park - KLCC
Lunch or tea
Paparich - Bangsar village
Alexis - Bangsar village
Loaf - Pavilion
ABCafe - Troika (not far from KLCC)
Drinks
Helipad bar - Menara KH (not far from Pavilion)
View- G tower
Social - Publika
Dinner
Apartments KLCC
Pavilion outdoor restaurants -any
Paparich again
Supper
...not much experience, but I once went clubbing at Marketplace and then had roti curry at the mamak next the club, that's my best supper ever!
When I am hungry at airport...
Old town coffee - KLIA (Don't be mistaken, they do serve good food on top of coffee!)
Starbucks - KLIA
KL my favourite brunch, tea, drinks and dinner places
You are missing a lot from the list. all your list based on malls. you are missing many outside mall one. like mamak, from mamak there are many best ones. then food courts, among food courts also there are best.
Hi Honkies don't live outside malls do they Miss Hong Kong? 
But yes in reality Banana leaf is so-so. much better food around. And the Social at Publika? Yuck!
Not a very discerning list for real foodies.
About 90% of food in KL is unhealthy and unappertising. So paying bega-bucks for second class food is an unfortunate reality that tourists fall into.
Some i have tried but i love ben's a lot, i love its interior details and also its coconut cake... Nice to have lunch or just get lazy weekend afternoon while alone toggling on phone or reading book
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