Yes, breakable blocks work anywhere, you just need to associate the tile mappings for them. Original graphics take up 10 tiles (4 for first frame, 4 others for second frame, and 2 others for third frame). All regions in the game have the breakable block graphics in their corresponding banks, including West and East Hyrule, not just palaces. It's just that West and Hyrule just have tile mappings set to black tiles. In both bank 1 and 2, breakable blocks are set as tile code 0x61, which translates to tile code 0x21 in Tile Mappings Table 1 (also, uses Palette 1). In bank 1, tables 0 and 1 share the same data, at 0x4417. Tile Code 0x21 in this table is the very last entry, and the values are 68 69 68 69. If you replace these by BA BB BC BD, which is the tile mappings for the breakable block graphics, it should work.