Well if you want to go mapping, I suggest you help out ripping resources. I know it's boring, but it has to be done. For the mapping part I think anyone who wants to help out can do it. But for the clashing of parts, I suggest that when someone starts a part he would post that he is going to do it. Like calling a veto on it or something. And when he has finished, others can comment or post variations on it for the parts they don't agree on.
I think we should focus first on the areas up to the first dungeon: Mabe Village, Toronbo Shores and Mysterious Woods. For these areas I think we need to rip are Hyrule Town, The north and south fields, The Minish Woods and Veil Falls.
I agree on it that one person has to put the maps together an look for inconsistencies. He also compiles the tilesheet for the game.
The dungeons parts will be a bit more difficult. The dungeontiles in MC have elemental themes, the dungeons in LA don't. The themes of LA are visible in the end bosses and the shapes of the dungeons. Just recoloring tiles won't do. We'll have to look for a solution there.