How large would the projects' image bundles be uncompressed, if they were to exist?

Also asked at:

http://meta.wikimedia.org/wiki/Talk:Data_dumps#How_big_would_image_bundles_b...

However, someone suggested I should be on wikitech-l more, so I thought I would try asking here. I read here regularly, but I prefer the dogfood. I promise to send the answer to the other place the question was asked if someone else doesn't do so first.

This is for a mirror project, which I want to fork into a peer-to-peer wiki system. A serious problem with peer-to-peer wikis is edit conflict resolution -- most everything else about syncing is not as hard as that in general. People often make the mistake of using git as a metaphor, but code merges are much more tightly coupled with the text being edited than most Foundation projects. But edit conflict resolution is so hard in peer-to-peer mode; for example, the two editors in conflict may be unavailable, and the person faced with the conflict may not understand the original or either of the two edited versions. We can use croudsourcing systems to, for example, have three people try to resolve each nontrivial conflict, and three more people to decide which of the first three was best; if there isn't substantial agreement, get a fourth proposal in light of the first three, etc. Can anyone think of a way to motivate volunteers to resolve edit conflicts as a third party?

Sincerely, James Salsman