Whether you're a competitive player or a casual fan of the Subspace Emissary, the NTSC version of Brawl remains the gold standard for experiencing this massive piece of Nintendo history.
The emulation community is actively working on HD texture packs for Brawl . Since you have the ISO, you can load these in Dolphin. Search for "Brawl HD Texture Pack v3" – it upscales character portraits, stage textures, and HUD elements to 4K, breathing new life into the 2008 classic. ntsc super smash bros brawl iso