The terrain is a very good point. Some areas are reasonably flattish. All of it can be manipulated by a dozer into some kind of use.
A property that has more steeply sloped areas, especially some very steep hillsides, will need a lot of study and experienced mentorship. Throw in some boulders and big trees, and it can become very interesting. A lot of those things are part of what makes cross-country courses special. But it takes thought and planning to make the most of it.
I really enjoyed visiting the Virginia Horse Trials in Lexington, VA. It’s built in an area with some sizable hills/mountains (depending on your criteria for ‘mountain’). The LL course is built across a more gently sloping field, while the UL course is across the road includes a portion on some seriously tilted terrain.
There is a whole set of criteria for measuring the amount of usable land when part of it is on a significant slope. For instance, I know of at least one farm that is technically 13 acres, but along one side it is so tilted, the equivalent of at least 2 measurable acres of land are not usable in any practical sense.