Original sentence: However, even among these groups there are differences: some want to include only areas with Hungarian ethnic majority, others propose the independence of Transylvania as a multi-ethnic/linguistic state similar to Switzerland, while the more extreme—a tiny minority within Hungary itself, but a larger minority among Hungarian minorities in neighbouring countries—want to restore what they see as "Hungary's maximum historic borders" regardless of ethnic compositions or the sovereignty of neighboring countries
Edited sentence: However, even among these groups there are differences: some want to include only areas with Hungarian ethnic majority, others propose the independence of Transylvania as a multi-ethnic/linguistic state similar to Switzerland, while the more extreme—a tiny minority within Hungary itself, but a larger minority among Hungarian minorities in neighbouring countries—want to restore Hungary's maximum historic borders regardless of ethnic compositions or the sovereignty of neighboring countries