Piglin trading based on Nether biome

I think trading with the Piglins in the current version (unless you have unlimited gold) is mostly useless. The player might want more Ender Pearls or Fire Resistance or Soul Speed armor or books. I had an idea that Piglin bartering odds would change depending on biome.

-In Warped Forest biomes, Ender Pearl odds are increased to 20% chance

-In Basalt Deltas, Fire Resistance Potions are increased to 10% chance

-In Soul Sand Valleys, Soul Speed Boots are increased to 10% chance

-In Nether Wastes and Crimson Forests, the odds remain the same.

There are 2 ways I thought of to make this happen. My first idea is that 3 passive versions of Piglins spawn in the 3 Nether biomes that they don’t already spawn in (and these look different to identify the biome the Piglin is from). My second idea is that whatever biome the Piglin is in at the time of the player throwing a gold ingot at them decides the odds.