Adding in Climate options during World Customization

A small idea, but I feel like it would be really handy. It's regarding climate, and I would enjoy having the ability to change it a bit during world creation. The main features I'm thinking of include:

• Changing the frequency of rain occurring (Feels a bit much more me, personally)
• Adjusting the general temperature/humidity, i.e. having more hot/cold biomes generated on average (Could be great if wanting to have a sort of theme to a world like Ice Age or Desert)

Those are the two big ones, though I'm sure there are more options players want.