I kind of agree with nik. The map looks pretty flat from a vertical standpoint, and you have some big sightlines that span the middle of the map.
As far as suggestions for this map go, I suggest that you take those constructions in the middle and replace them with a large building, you could curve the paths that go around the building into a 'c' or 'u' shape in order to block sightlines, idk just a suggestion
Don't stress too much about major problems (sighlines, open space (there's a lot here that needs trimming)), learning to curb them comes with time