Would dotted pair notation make sense for this lisp where lists are arrays, not linked cons cells?

IMHO, yes, binary building blocks matter a lot in lisp philosophy, whether or not they're built on javascript arrays.

Thanks for responding, man. That's my point though. There is no cons building block in this lisp. I don't think (1 2 . 3) can be represented in it so having the notation for it makes no sense.