I too have suggested a virtual AGM, but i think one of the problems is that all the work will fall to Mark, and there's only so much we can reasonably ask of him.
I'd be in favor of spending a few pounds to make it happen and take the burden off Mark. Think of it: a world-wide meeting and a chance to meet personally with folks you have been talking to for years. There are models out there now from clubs that have done it, so we would not have to re-invent the wheel. I think it's worth exploring again.