I don't know who to blame for this but this is EA levels of scummy business practices.
Larian Studios now expects those unfortunate few of us that chose the now objectively inferior GOG version of the game (which was heavily featured on this service btw) to buy the game THREE times in order to get cross-saving with the Switch version. Is this a joke?
The Witcher 3 did it just fine so why can't this? I can only assume they're trying to milk some more Steam sales in one final desperate effort.
All respect lost for both this service and developer.

is there any chance to have these features in the future ?

I need it!! Please

Are there any updates on this, regarding GOG and the API you said they would need to provide you with?

Just passing by, but just get everyone together that wants these switch to Galaxy saves and write GOG mail on the side of switch boxes asking where the api is and when it could come.

Any word if the new Larian Account adds cross-save with switch?