Skerrit has posted a discussion starter on the LFR blog: community.wizards.com/lfr/blog/2010/05/0...
The Global Admins are trying to solve this problem
Problem: Making tables for people that rarely play, have disparate levels or are new players coming to established conventions, is difficult. For example, a brand new player and four other players (level 6, 8, 11, 12) all show up at your gameday and thus can't make a table; so all of the established players end up making another first level PC and replaying an old H1 adventure with the new player.
The blog then discusses possible solutions and various concerns they are already considering with each option. I won't copy the rest of the blog here as it's too long.
Skerrit has started a thread on the forums in the LFR group and it would be sensible to put discussion there, as he asks in the blog post. That thread can be found here: community.wizards.com/lfr/go/thread/view...
It's worth quoting the final paragraph of the blog:
We realize this is a hot button issue for advocates on both sides, but as LFR is intended to be the gateway campaign with less barriers to play than other campaigns the RPGA is or will be developing, we need to address this issue. The question is what is the best approach? Please feel free to comment on this blog or in the forums belong to this group. How would you do it (esp. which approach)? What are the Pros and Cons? Please keep things civil and constructive.