Well... There's the thing - Adventure really doesn't need supplements - everything you need to run an Adventure! campaign is located right in the main book. The World of Wonder has plenty of plot hooks for people to sink their teeth into, Agents of Change is a pretty good writeup of some very interesting Good guys and Bad Guys (with even more plot hooks to boot!)... What needs to be expanded? The only thing I can really think of is more Knacks and Background Enhancements. Sure, some of the Agents of Change can be given more depth, but then, I only use them for background anyway (much more fun to come up with your own!).
Remind me to post up info on the Knights of Avalon sometime...
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Lee Davis-Thalbourne/Kirby1024
kirby1024 AT yahoo DOT com DOT au
Here but not forgotten.