so it seems to me as though you're just requesting this feature for the sake of keeping Khaled busy. I'd like to think he has better features to work on than adding new ways to do the same things.
Rather for convenience than anything else (var -g was added for that reason no?) and it just seems weird to use an undocumented switch that is, afaik, only supposed to be used internally.
But you have a good point with -n meaning it should treat value as plain text, causing issues when setting multiple variable with /var. The routine could be extended though I admit it might not be a good idea
