What problem does this address?

Currently, when locking blocks, the locking only applies to the block in question. However, in some cases, like a Group block, you might want to lock all blocks within it too. The only way to do this is to lock each block individually. This came up during the 6.0 walkthrough.

What is your proposed solution?

Provide a way to cascade locking properties down to the blocks within a container block. This would be slightly different from locking a reusable block, in that you can still edit the contents, you just can't move/delete the items inside. Perhaps one approach would be to offer a toggle inside the locking modal saying: "apply to all blocks inside".

cc @Mamaduka @critterverse