Zombified villagers of all biomes should spawn anywhere

Because of the recent villager changes, if you play on a world with one biome (such as superflat), you are missing out on almost every enchantment. A way to fix this I think would be to make it so zombie villagers can spawn with any biome. For example, a zombie villager could spawn as a snowy zombie villager, a plains zombie villager, desert, taiga, jungle, swamp, etc. This would still keep librarians balanced, and could potentially teach new players that swamp villagers and jungle villagers exist. Although the chance of a different biome zombie villager should be a lot lower, to make it balanced. Like maybe theres a 2.5% chance a zombie villager spawns with a different biome, and then theres a 1/7 chance for each of the biomes; 1/7 chance for desert, 1/7 chance for snowy, etc.