Hello,
There have been a lot of points raised, so I'll answer a few generally. (All messages from committee members, including this one, are personal messages and don't represent the committee.)
New simple-language wikis will not be created under the current policy, simply because the policy does not have objective criteria that would allow them. Do we allow any simple wikis, like a "simple Cherokee" Wikipedia? If not, what objective criteria distinguish deserving from non-deserving languages? If so, should we also permit scientific-language wikis, and any other arbitrary variant contributors may legitimately propose? If not, what criteria distinguish deserving from non-deserving variants?
There are two ways to create new simple-language wikis. The first, most obvious but most difficult, is to formulate those criteria so that the policy can be changed to allow them. The second is to circumvent the policy, by convincing the Board to accept such a proposal directly. (The second may be possible, but would be very unfair to contributors who want a simple non-English wiki, which won't have the same amount of popular support to sway the Board.)
The language committee itself was created by Board approval, and can be dismantled or have its membership changed by Board approval. Without a language subcommittee, requests would need to be processed by the Board or the sysadmins directly. More likely, the membership would be changed in case of problems. I think the language committee does more good than ill, but persons who disagree can certainly gather together and propose a change.