Hi again Shane,
After I posted I re-read the thread and only then noticed the date of your other post

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Yes, The Loft is quite upmarket for a food court and food is very good. But it's soooo crowded at lunchtime!
The MBK foodcourt is very nice now........looks more like some a big casual restaurant. I can't remember whether it's a card system or still coupon though. I think the renovations have only been done in the last 12 months or so.
Another one that's nice is the one in Emporium (5th floor I think) This one is smaller but has some quality food counters - and also a swipe card payment system.
Yes, I DO eat at other places when in Bangkok!! just when I'm shopping, I like to use the food courts - no need to go outside somewhere to find a place for a rest break and fuel stop.