I work for the tourist board (VisitScotland) and agree that our regional boundaries, in the British Isles as a whole, can be quite confusing for visitors. In my mind the best way to split Scotland is into Lowlands/Highlands/Islands (as that's the way that many visitors look at it) but the geography of our nation means that it is difficult to break up logically into territories.
In fact, our research shows that many residents of England (of whom around half have never been to Scotland) when given a map with no boundaries, find it difficult to draw even where the border between England and Scotland is!
From a whisky perspective they (Independent bottlers etc) have tried to break up the Highlands region into North, East etc to help consumer choice as a whisky from say Fettercairn on the East side of the Grampians is very different from say Clynelish north of the Dornoch Firth.
However if you search on similar 'terroir' threads it is apparent that regional breakdowns, as far as whisky is concerned, are being seen as increasingly sceptical.