ALLOWED Files on W3M's

The following files WILL NOT WORK if you add them to custom w3m. They're loaded before the map get's loaded.

Units\MiscData.txt
UI\MiscData.txt
UI\MiscUI.txt
UI\SoundInfo\MiscData.txt
config.txt
UI\war3skins.txt
UI\SoundInfo\EnvironmentSounds.slk
UI\SoundInfo\EAXDefs.slk
UI\SoundInfo\AnimLookups.slk
UI\SoundInfo\MIDISounds.slk
UI\SoundInfo\UnitAckSounds.slk
UI\SoundInfo\UnitCombatSounds.slk
UI\SoundInfo\UISounds.slk
UI\SoundInfo\DialogSounds.slk
UI\SoundInfo\AmbienceSounds.slk
UI\SoundInfo\AnimSounds.slk
UI\SoundInfo\AbilitySounds.slk
UI\SoundInfo\PortraitAnims.slk
UI\WorldEditData.txt
UI\WorldEditGameStrings.txt
TerrainArt\Terrain.slk
units\AbilityData.slk
units\UpgradeData.slk
Splats\SpawnData.slk
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The following files MAY WORK if you add them to custom w3m. They're loaded after the map get's loaded. I said MAY just coz i'm not 100% sure, but probably yes. I used ShadowFlare Filelist creator plugin to trace this.

scripts\common.j
scripts\blizzard.j
Doodads\Doodads.slk
Units\DestructableData.slk
Units\CampaignUnitStrings.txt
Units\HumanUnitStrings.txt
Units\NeutralUnitStrings.txt
Units\NightElfUnitStrings.txt
Units\OrcUnitStrings.txt
Units\UndeadUnitStrings.txt
Units\UnitGlobalStrings.txt
Units\CampaignUnitFunc.txt
Units\HumanUnitFunc.txt
Units\NeutralUnitFunc.txt
Units\NightElfUnitFunc.txt
Units\OrcUnitFunc.txt
Units\UndeadUnitFunc.txt
Units\CommonAbilityStrings.txt
Units\HumanAbilityStrings.txt
Units\NeutralAbilityStrings.txt
Units\NightElfAbilityStrings.txt
Units\OrcAbilityStrings.txt
Units\UndeadAbilityStrings.txt
Units\ItemAbilityStrings.txt
Units\CommonAbilityFunc.txt
Units\HumanAbilityFunc.txt
Units\NeutralAbilityFunc.txt
Units\NightElfAbilityFunc.txt
Units\OrcAbilityFunc.txt
Units\UndeadAbilityFunc.txt
Units\ItemAbilityFunc.txt
Units\HumanUpgradeStrings.txt
Units\NightElfUpgradeStrings.txt
Units\OrcUpgradeStrings.txt
Units\UndeadUpgradeStrings.txt
Units\HumanUpgradeFunc.txt
Units\NightElfUpgradeFunc.txt
Units\OrcUpgradeFunc.txt
Units\UndeadUpgradeFunc.txt
Units\CommandStrings.txt
Units\ItemStrings.txt
Units\Telemetry.txt
Units\CommandFunc.txt
Units\ItemFunc.txt
TerrainArt\CliffTypes.slk
TerrainArt\Water.slk
Units\UnitMetaData.slk
Units\UnitUI.slk
Units\UnitData.slk
Units\UnitBalance.slk
Units\UnitAbilities.slk
Units\UnitWeapons.slk
Units\ItemData.slk