Update old content for high lvls

i know it might have been suggested before but since we never hear about it...

here is the idea. update low lvl instances for higher lvls.
for example (but should do it for every single one), Gate of Delirium (FB39), could be turned into an instance for lvl 100+. but not a different instance, like Phoenix Valley that are using 1/10 of some low lvl FBs. but the full instance at a higher difficulty.
could add a npc outside, like Trophy Mode maybe, quest can only be taken by lvl 100+ to enter the instance (like PV for example)

or even better, add different lvls : 100+,101+,102+,103+,104+,105. so it makes players lvl their characters, good for PWE.

of course, difficulty should be hard enough, and have some kind of reward. but i think it could be a good idea because :

-would add more content for high lvl players
-easier to make than add new real content (instances already exist, no need to add region or new story)
-think a lot of old players would like it, would remind them when they started to play , but at their lvl, not running the low lvl instance

several other MMOs are doing this way, so of course its possible, and thats a good way to keep players.

really doubt it will ever make it to china, but heh, worth a try.

now ready for the hate comments b:avoid