Of course. @teejay said it far more eloquently than I could about a site being an ever updating site but as for the actual design, you could sketch up a design for the site or use tools like Figma to layout out the site and then move it over using the Editor X conversion .
If you’re more visual, there’s nothing wrong with that. I think our team that creates the templates will use a platform to design the general look and then rebuild it on X. I’m more a “seat of my pants” so I will just throw elements in there to see what looks good but even then, I’ll use things like grids / layouters / repeaters to structure the site.