So, why not, just like you didn't have an Elven Crusade in your game, not have the 100 year jump forward? Maybe even have a high-level campaign where your players can stop the spellplague. (Once we know more about what it is.)
Heh. I've no intention of having a 100 Year Jump, but you missed my point which I explained in my previous post.
While I am not using the Elven Crusade in my Realms, I'm still finding lots of use for various Realms products being released, such as Dragons of Faerún, Magic of Faerún, Power of Faerún. I'm not using the Elven Crusade, but that doesn't stop City of Splendours: Waterdeep from being very useful to me. Infact, many people who have variant, non canonical realms can find uses from the various sourcebooks put out. I'm happy recommending them to friends who play the Forgotten Realms.
If, however, there is a 100 Year Jump, it's effectively become another setting entirely, with none of the flavour of the current realms. Sure, Drizzt and Elminster might still be around, but as I said before, if Waterdeep, Cormyr, Sembia and the Dalelands have been drastically changed, my use for sourcebooks detailing those realms in 4th Edition is nil. This would make me upset, as I quite enjoy buying Forgotten Realms sourcebooks. It is not wise to make new fans by dumping the old ones, as the old fans of a setting are most likely to stick with it.
Elminster being perpetually out of town requires more suspension of disbelief than hit points do.
If he effectively can't exist in the game world, he needs to be changed or dumped.
Ed Greenwood, in a Radio Interview, described his role as 'Flavour Text'. That's how I use him. He works well in novels, but ingame? Using him and the other Chosen relentlessly is just poor DMing, by people who don't understand the Realms. He is off fighting threats that the PC's couldn't even hope to stand against. Heck, have Elminster give the PC's a task, if you want. That's how you use him in the Realms.