WvW armor
The gear advantage is just part of the problem; not having access to all of your skills and a full Trait build is a more pressing issue.
Do you even lift, bro?
Im just talking about a little incentive for them to play. You could add the ability for them to have all skills and all traits, but I just think the armor issue is the biggest difference between say a lvl 40 player and lvl 80. The game does scale traits up, but not armor. Another idea I just thought up is to scale individual armor up. For example, if they are lvl 60 wearing full exotic lvl 60 armor, it would scale up to the lvl 80 exotic equivalent. If they were lvl 60 wearing full rare lvl 55 armor, it would scale up to lvl 75 rare (subtract actual level by armor level, and subtract that from 80, that is what their armor is scaled up to).
The game does scale traits up, but not armor.
Actually, its the other way around. A lvl 80 character has access to his Grandmaster Traits, a lvl 20 character doesn’t. The lvl 20 character’s armour does get scaled up though.
Do you even lift, bro?