May be it is not exectly the same language (cultural diiference) but as you already explained the differences for the English Languages and they are even more differences then you mentioned:
Dialects and regional varieties
List of dialects of the English language
that all go under same nominator 'English'
Swedish Language
Standard Swedish

Quote:
Standard Swedish, which is derived from the dialects spoken in the capital region around Stockholm, is the language used by virtually all Swedes and most Swedish-speaking Finns

and in that light:
I would Mark only "Swedish" as the main nominator and not the others in this context.

I also don't think there's any need to distinguish between two separate subtitles of the same language, but I do like to have the possibility to distinguish between two or more audio tracks with dialects of the same language. Like for instance Dutch spoken in the Netherlands and Dutch (Flemish) spoken in Belgium.

we could ask for a thick box 'Local Dialects' before Ken releases his new release of DVD Profiler that would solve a lot of problems of this kind!

Yes, but they have to release DVDs with separate audio tracks for these dialects first.

Yes there are movies in those dialects, but not in ABN (Original Dutch) and local dialects on different audio tracks. While there are some (mainly Disney Animations) that have both Dutch and Flemish dubs.

Quoting Giga Wizard:

Quote:
Quoting Daddy DVD:

Quote:
... but I do like to have the possibility to distinguish between two or more audio tracks with dialects of the same language. Like for instance Dutch spoken in the Netherlands and Dutch (Flemish) spoken in Belgium.

before you look for problems over the border, you better solve the Netherlands issue first
Frysk
(English) West Frisian language
(Dutch) Westerlauwers Fries
And don't forget
Limburgs
(English) Limburgish
(Dutch) Definitie van het Limburgs

my sincere apology for the ones left out or i forgot to mention

There are even more dialects, but they are no official languages. Only Frisian
is an official language in The Netherlands next to Dutch. For example Limburgish, Dutch Low Saxon, Hollandic and Brabantian are all just Dutch dialects. Limburgish and Dutch Low Saxon are the only two official dialects in The Netherlands. I think in Belgium there are next to Dutch (Flemish), French (Walloon) and German also (official) dialects, isn't Limburgish the dialect of Flemish Limburg?
@Giga Wizard there are Frisian (Frysk) movies, for example De Fûke (2000). But i really need subtitles for those movies 

Keep it the same otherwise you'd have to distinguish between:

Portuguese
- Portugal, Brazil, Cape Verde, Angola, Mozambique, East Timor, St. Tomé & Principe, Guinea Bissau, Macau, ...

Between the 2 main forms (Portugal & Brazil), not only are there different words as the place of the words in the sentence becomes different in several occasions.
While with the others there are a lot of typical words and expressions as well not used outside of that particular country.

Spanish
- Spain, Colombia, Venezuela, Chile, Argentina, Peru, Equador, Mexico....
Latin-American spanish (or Castillian if you prefer) is surely different from the one spoke in Spain.

And so far, we don't have those divisions on DVDProfiler. And I'd keep it that way. (Although sometimes it's a pain in the butt to check in DVDProfiler if a certain title has portuguese subtitles before buying it and then it comes with brazilian portuguese subtitles... they just sound "odd", ya know..)

Languages have "official" grammars, dialects don't. That's why Frisian, Afrikaans, Catalan etc. are languages while there's only one Portuguese, one Spanish, one French language. Here the differences are mostly in vocabulary.