That's their fault, then.
I did Toto-rak at level 30, and Shposhae at level 20. If I can restrict myself what's stopping anyone else from doing the same?
The point is to make long lasting content, however if most people are over leveled then do all the content, it can be beaten very quickly, I'm not talking about Difficulty of the Mission/Quest, I'm talking about ways to make content "last" and not "Rushed". Most people if they see an easier route to beat the content available, even if they don't want too. temptation will be there to actually do it.
And again, I stand by that level capping isn't the do-or-break between people helping each other or not. If content is fun, people will help. Or if that's not enough, give incentives for others to help with cleared content, like seal rewards
You know what's not fun? Cheesing content. What's the point in it being there if you don't actually get to experience it the way it was intended?
I would at least like optional level caps, I think they could be fun (sometimes you don't have a person to sync to). We did toto-rak when it first came out with low level classes and it was great.
Well... It's probably going to happen regardless... I support it, though. Could be fun. I'm sure they learned from XI how to implement it properly from feedback... won't know until it's released I suppose.