Not much need for that. But I would now change the rule so that the number-list must have 34 at both ends. It is little illogical and ugly that there is only one 34 but two quotation marks is prettyprinted.
> '(34 72 101 108 108 111)
"Hello"
Interesting solution! I wasn't sure if you were joking, but I see this syntax/convention is actually used.
Is there a way to escape the first number if there's a need to create a list with a literal 34?