I naturally outlevel my casual friends just from more /played time. I'm trying my best to slow down on my Lore-Master in LOTRO, but even my attempt to shift to crafting results in a fair bit of exp while I farm Wargs for leather. I've even passed Nelgdorf and Nazrin by several levels.

Being able to play compelling content together with my friends has been an issue in almost every MMORPG I've played, either because of myself pulling ahead or someone else.

City of Heroes has several tools to get around the problem, including the Sidekick system (which I adore) and now the Leveling Pact (which divides exp between two players, even while one is logged out). CoH's advances have been embraced by EQ2's Mentoring and Final Fantasy XI's Level Sync, but other games haven't adopted the ideas.

There are three reasons why I assume level disparity between friends is accepted (and even preferred) in MMORPG design:

• As Pacing for storyline, leveling is a good game mechanic, but it may be so finely tuned that it just doesn't allow for adjustments like syncing.
• Leveling independently is often considered as a rite of passage to 'know your class'. In other words, it's pacing for character growth. Any perceived boost may be seen by the playerbase as unfair gains: This was an issue in Age of Conan, where many players balked at the mentoring system until it was nerfed past usefulness.
• Level disparity feeds The Vision, which dictates that you should find and group with new acquaintances while you level up so you'll have sticky in-game-only friends at Endgame to make it emotionally difficult to leave the game.

Simpler and more apt for my current situation:

I wish LOTRO had something akin to Vanguard's Reduced XP Gain spell. Basically, some way to lock my level and not gain any exp until my friends catch up. I think nearly every MMORPG could benefit from a Level Lock feature (The Vision be damned).

Imagine players who would like to experience the old pre-expansion raiding content by locking their levels at the old Endgame. Or roleplayers who don't wish to grow up past Hobbiton. Granted, most would probably still prefer to be competitive at the very top of the scale, but what a natural way for developers to stretch content further, via player choice.

And it would as easy as candy to implement too.

I've requested a Level Lock feature via a post on Turbine's suggestions forum. I hope they're listening. =)