At Parshablog R. Josh Waxman mentions a new ḥumrah against using maps. This ḥumrah is from a ḥassidisch school, so there’s no reason to think that this absurdity has gone beyond this school’s walls, and let’s hope that it doesn’t. Josh comments that
I’d just point out that Mizrachi, the famous supercommentator of Rashi, includes maps where appropriate to explain what Rashi means.
There is no need to go to the Mizrachi when you can go to Rashi himself. The problem is that Rashi’s maps didn’t make the cut for most editions of his commentary. This phenomenon is not unknown from other MSS. I remember seeing drawings in a MS of Rabbeinu Yeruḥam and then noticing that in the printed edition there were no drawings, but there were still spaces set aside for them, leaving a blank square spot from time to time.
As for information about Rashi’s maps, see this book chapter by Benjamin Z. Kedar. Mayer I. Gruber has also written about Rashi’s drawings and maps. See: Mayer Gruber, “What Happened to Rashi’s Pictures?,” The Bodleian Record 14.2 (April 1992), 111-124 and Catherine Delano-Smith and Mayer I. Gruber, “Rashi’s Legacy: Maps of the Holy Land,” The Map Collector 59 (Summer 1992), 30-35. Also see footnote 6 here and this article.