There'd be an opcode for allocating a record with a given capacity.
I'm choosing to "adjust" multiple-assignment at runtime, so add an opcode to capture the current stack-height in another stack, & another to ensure there's only so-many values after that point on the stack. Ensuring unused stackslots are nil'd could speed up elongating this!
These "tuples" would also be used for handling function arguments & returns!
I'd have an opcode for allocating a closure for a given function.
4/5