Have you seen the power window kits for older vehicles that uses your OEM window regulator?
This is a Walmart kit, and there are a bunch of others out there that are easy to find by doing a search for "Power window conversion"
The drive unit goes inside the door, and the boom goes between the door and the door panel and slips over the existing handle stud.
This way you can have a handle just like the car was made but it will be power operated, or you can take the handle off and put a cap where the handle was.