I was thinking player to player prestige gifting (once researched) would be the method of transferring prestige. Of course then you can threaten to siege someone unless they give you prestige :)
The alliance prestige pool system suggested (everything devs post is only a suggestion until it goes live... cough...tax-doesn't-effect-food...cough) has different uses.
- This system will give more meaning and purpose to alliances.
- Prestige Pool use/availability to alliance rank will encourage strong alliance hierarchy, and give new players something to thrive for.
- This is a gateway to alliance achievement's that grant additional prestige to the prestige pool. (example: 100% of members complete a quest in 1 day - reward 1 prestige)
- One of the benefits of befriending a faction could be alliance prestige
- Prevents non-allies from being coerced into giving prestige away. Only alliance mates can share prestige.
This will really encourage less alliance fracturing/multiplying, and empower all the alliances that are currently out there.
Only downside will be what Rill suggested.