It's great that BB want to bring an event that gets people working together. The EOTW event is a huge fail in that department.
You are better off keeping your motivation to work together, and do it in some other way.
- Get your guild to focus on a different adventure each week/month, sharing lootspots and resources etc as needed.
- Those that can create guides and offer constant help for those who can't/don't know how to do it.
- Offer your guildmates a reward for who can complete the most.
- Have Guildies donate portions of their loot to the guild, that then goes back to guildies when they need it, or to lower level guildies to level quicker to match others.
Just a suggestion.
Cheers
Scruffy