Lego very very rarely will design a new element for a set, let alone a Ideas/Creator set. For a new part, its in the neighborhood of 300-500k for a new injection mold for a single new piece. That's not going to happen for most one off sets. Sometimes sets do get designed with new pieces in mind, or when they really have a shortcoming. But I don't see anything obvious in the typewriter set that is purpose built.

Reviewing the bricklink entry for the typewriter, the only noticeable new items are the painted key tiles for the typwriter. Painting is a great way to give new life to old tiles. I see some new color options as well, but nothing "new"

https://www.bricklink.com/v2/catalog/catalogitem.page?S=2132...