01. To be able to release a state to a country that exists. I wanted to give Moldova back its bit that starts out as part of Austria. (I had formed Großdeutschland and was breaking up the Ottomans and Russians and wanted a full sized Romania.
02. To be able to release parts of nations... Poland is usually the big issue for German Players as you want to have a buffer state / reduce Russian influence while NOT giving up your cores.
03. Promote if not pick the starting Government of the released nation, if creating not adding to and existing nation.
04. To be able to release a nation as an independent nation not as a Satellite, as an option.
05. To be able to remove nations from your own SoI (basically some GTFO functionality).