The corruption and crimson are currently assymetric with the hallow in a few respects. It just seems odd to me how outdated they feel compared to it. Here are a few things I feel could be changed.
- Why on earth do the corruption and crimson still permanently damage the jungle? There is so much necessary content in the jungle that it can grind your run to a complete and utter halt, and people have been complaining about this since before 1.3. PLEASE make the jungle immune to it, there isn't any reason not to at this point.
- Let NPCs move into houses in the corruption/crimson. Doing this already wouldn't be risk free because of the strong enemies in the respective biomes and would also remove grinding for many items that you shouldn't have to grind for (looking at you, purple and red solution). Plus, it would remove the massive trolling potential of planting corrupt/crimtane seeds in a cave just below a colony and stealing all the NPCs from them.
- Add more potion fish to the corruption. There aren't as many corruption exclusive ingredients as both the crimson and hallow, so add a new one. Possible ideas are a potion that increases item grab range or a potion that increases the drop rate of hearts.