There are a few reasons I have pointed out this idea.
1. It is quite hard for a new mapper to start out, all owing to some of the people in our current community. Instead of giving useful criticism, they merely flame the mapper for his "failure" and end up discouraging them from continuing to map.
How would a mapping committee fix this?
The committee would compose of unbiased, experienced mappers that actually provide useful feedback. A specific sub section on the mapping forum could also be provided for use of committee comments ONLY, preventing all the useless spam we get from other childish members of the community.
2. Most maps aren't tested properly. They are merely scanned for mistakes, not really testing gameplay. This is a big problem for new mappers. They have no idea what the gameplay would be like, and because of the lack of actual play-testing, will never know.
How would a mapping committee fix this?
The committee would hold periodic sessions where new maps are tested for gameplay. Tested in the sense that there are over 2 people on either team. I realize that most people probably do not have time for this, but it would be an absolutely massive help to the mapper.
3. The current mappers only continue mapping because they have already established a decent reputation within the community, so their experience with mapping is more enjoyable. Other people find mapping boring and way too complicated.
How would a mapping committee fix this?
Who said the committee will only help people with their mapping? It could act as a group that promotes the mapping aspect of the game. The people in this community are always complaining about how the game is dying. Well, think about it this way. Look at PBCup. It's a group of dedicated PB players that want to do something about the clan scene, and have actually taken action. Why not have another group that do the exact same thing, except for the mapping aspect of DP?
4. In case you haven't noticed, there are only a few select few well known mappers that are still playing the game. With the number of mappers decreasing, the mapping scene will soon disappear. (not trying to sound dramatic, but it's kind of true)
How would a mapping committee fix this?
Mapping competitions held by the committee. This attracts current DP players with creativity and the willingness to try mapping to actually go ahead and take action. A junior committee could also be created to represent the much newer mappers. We have many mappers right now that don't get the recognition they deserve, and end up being discouraged because their first map wasn't up to par with most people's expectations.
Anyway, those are just my opinions on helping the mapping aspect of DP. Agree or not, post your HELPFUL and USEFUL ideas and opinons.