I post this topic a while back and recent discussion has brought idea back..
How they would work: (took this from tournaments played on a different game)
(just rough estimates)
Four levels-
1. Novice- 1-30
2. Advanced- 25-51
3. Expert- 51+
4. Open- Any (XP in 'Open' earned as follows: Novice= 1x, Advanced= 1x, Expert= .75x
These levels could also control which modules/aids are available on any given level (ie: AA, Hit markers etc.)
These levels would allow for more competitive gameplay as well as removing the need for Vote Kick.