Describe the feature

For the next major KubeJS update maybe add functionality for a method like the Block Builder in the Fluid Registry, so that custom fluids made with KubeJS aren't restricted to acting exactly like water.

If not then at least add more vanilla purpose to .luminosity .temperature .viscosity and .density, so they aren't completely useless without relying on a super specific mod to add its own niche functionality.

Maybe have .luminosity actually give the fluid its own Light Values, or make .temperature actually burn the player based on how high its value is. .viscosity could control how quickly the fluid spreads. .density could limit the player's movement; Exactly how you'd picture these functions to work initially.

And maybe compatability with the random tick function so users can add random particle effects, etc

TLDR; Block Builder for Fluids, Pretty Please c:

Additional info

No response

.burnPlayer(true) or just .burnPlayer() could work for the temperature part