More terrain brush types

We really need more brush types.
We are currently very limited in what kind of outdoor encounters we can make.

My players are about to get into a more sandy area, and even just a single "Sand" brush would be very useful.

Brushes that I feel like would be useful:

• Sand
• Sandstone
• Snow
• Ice
• Moss
• Mud
• Different grass types (dry, wet, forest, etc…)

Could have current tiles be used for brushes
Could have lava working in a similar way to water too.

And ultimately, but probably not easy at all to do, would be to import our own brushes. Kind of like Inkarnate does.