Feature request: Spawn different crate types according with their defined weight

[Abburo]

It would be great if we can spawn different type of crates according with their specific weights.

This will help when using slingload and have let's say 500 kg sling in the generic box shape of crate. It seems that crates are responding to aerodynamics as well and a big and light crate will be all over during sling time. At least two options would be good, preserving the default ugly box and adding the Huey type of crate as option for weights below 800kg let's say.