Do you want level scaling in Azeroth?

[championknight]

Make it optional and it should be good.

Still remember this quest giving me fits even when I was 5 levels above unless it was a pally, priest or mage

http://www.wowhead.com/quest=1090/gerenzos-orders

Too bad such optional challenges don't exist anymore

[Kowloon]

I would never use a feature like this. Reworking old zones (beyond allowing flying mounts) that I've already leveled through it, quested through, killed every mob necessary, and the likes would be a waste of time.

Less reworking old-stale content and more advancements toward new content, imo.