Well, as I'm not now overdue to take the dog out and I've done dinner (pancakes, obviously), I can elaborate on my own thoughts...
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A very basic option would simply be IGT 2015. It probably won't have much "grand" to it with the current level of forum activity, but it gives everyone a chance to do a bit of everything and doesn't need one person to write the entire day.
As discussed for (the non-existent) IGT 2014, the non-existent 54mm range these days means that a prize pool is difficult to handle (particularly if anyone wants to pay on the day), so the best that would be up for grabs would be kudos and anything people were prepared to donate.
I'm prepared to have a hand in running this, but I would also want to participate as far as possible (excluding myself from any prize winning, should prizes so exist). Aside from actually wanting to play some games, the numbers would be marginally healthier if everyone was as involved as possible.
(I'd also love to see some 28mm players come along, although as much as I want to see the full panoply of Inquisitor at one event, I'll be content with any event we can manage at the moment).
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Option two is that it once was proposed that we could on some occasion have just a general meet-up, where players/GMs could arrange scenarios between each other in advance. This never came to fruition, but it could actually be a pretty worthwhile event, to let some more intricate scenarios be run.
Should I ever get the Warhound finished, this kind of event would be a rather tempting time to run the "God Machine goes to War" scenario I have planned.
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I have also for a while had plans to run a linked series of three events centred around a large Imperial campaign.
Each event would be relatively self contained, so could be enjoyed even if players couldn't make it to all of them, but there'd be some plot threads running through the whole series that would provide a larger sense of continuity than some other 'Clave events have had.
However, I would want to have the first event in a fairly complete form, and good drafts for the later plot (which would of course change with the player's actions) before I announced dates.