I was told the kimchi was locally-sourced in Korea and, as far as kimchi goes, it was fairly mild, which caters to mainstream tastes I think... There wasn't a lot of fermented funk to it nor was it terribly spicy. Maybe it's because I'm used to eating kimchi with Korean barbecue but I don't like the way it goes with the creaminess of the cheese here. It's not awful but the flavors didn't mesh very well.
Beyond the Kimchi Quesadilla, I was also able to sample the Tikka Masala Burrito from India and Loaded Fries, which are available in the UK and Japan.
Taco Bell also put a number of other international items on display, although I didn't get a chance to try them:
From Cyprus, there's the Gordita with Fries and Tzatziki Sauce:
For Chile, there's the Fiesta Fries Burrito:
In Spain and the UK, there's the Chocomarsh:
Japan was represented by the Shrimp & Avocado Burrito:
Finally from just up north, the Cheetos Crunchwrap Slider: