Not only was Avalon to remain that bastion, but it needed to be safe while I was in between lives. There were only so few I trusted Avalon with. Having it go into a hibernation mode while waiting for me to Awaken, was a brilliant idea that Merlin came up with. The only downside would depend where my grimoire was. Luckily, mages ended up using Avalon as a site for governing and was easily accessible for my grimoire.