Yes there are other issue that need addressing first that goes without saying but I would still like them to at least consider Level Sync's implementation as soon as possible so they don't have to go back and rebalance x amount years worth of content if they leave it for a long time or do what they did in FFXI and not rebalance at all.
Like this comment much better.

I realize ATM Level Sync isn't in place. But as you seem to be fairly skilled. You should show your low rank friends how to Power Level. That should at least get them close for now.