Hello,
A set of users have sometimes expressed a desire to revise the language proposal policy drafted by the language subcommittee. Unfortunately, I haven't seen any conclusion or consensus on how to change the policy in any of these discussions. Instead of discussing it over and over, I suggest interested users collaborate on a community-drafted policy at http://meta.wikimedia.org/wiki/Meta:Language_proposal_policy/Community_draft. This would be drafted and approved by the community using whatever system they chose.
(This message is entirely unofficial, not from the language subcommittee. The subcommittee never sends official messages or proposals.)