Steamship Soldier on the Information Front, by Nancy Kress (Asimov's Science Fiction, April 1998) http://www.asimovs.com/hugos/steamship.html
A good depiction of the life in the fast internationalist lane.
The Bohr Maker, by Linda Nagata
The Bohr Maker device is very similar to the effects of the roots; the rest of the technology is in general several decades beyond the campaign setting.
Distress, by Greg Egan
Biotech, a changing human condition and information cosmology. The first two are highly relevant for this campaign. Also by the same author, the following short stories in the collection Luminous might be useful: Chaff, Mitochondrial Eve, Cocoon and Silver Fire
Evolution isn't what it used to be, Walter Truett Anderson
Biotechnology and information technology - where are they taking us?
The Star Fraction, Ken Mcleod
Insurgency in a future Britain split into different mini-states. While the global political situation is different in this campaign, many ideas can be borrowed.
Funky Business, Kjell Nordström and Jonas Ridderstråle
About the future (or now) of business - speed, internationalisation, virtualisation, frictionless markets and change, change, change. This could be the manifesto for the internationalists and give a good feeling of their world.
Newer York, New York, Michael McDonough and Bruce Sterling (Wired 8.01, Jan 2000), http://www.wirednews.com/wired/archive/8.01/futuretekture.html
A good description of modern "smart living" and what industrial bamboo might be good for. Provides many ideas for descriptions of internationalist enclaves.
Jonathan Adams, Global land environments since the last interglacial, http://www.esd.ornl.gov/projects/qen/nerc.html
How the climate looked during the last ice age, good ideas for how things may be changing in this setting.
For China I used a mixture of Vangelis' China, traditional Chinese music and Laibach's NATO.
As things moved into a more internationalist direction I instead began to use Kraftwerk and synthesizer hits - there are many muzak-like compilations of light and airy synthesizer music that fits airport life. Other useful sources were Vacuum, Talvin Singh, the soundtrack to Akira and David Hudson's Kuranda.
Akira - A good depiction of how a host could lose control over his powers.