> * Who is interested in this feature?

Me definitely, everyone probably.

> * Should it be severed from throwing subscripts?

That depends I guess; subscripts are basically functions anyway so it didn't 
make a lot of sense to me that they lacked features that functions have, so if 
implementing both of these features is basically just a case of linking up the 
same behaviour from functions then I say do them simultaneously if possible. I 
don't know much about the actual implementation details though so obviously 
someone else should make a final decision ;)

Basically I'm in favour making subscripts have as much in common with functions 
as possible; in fact they really should just be a property-like shorthand for a 
regular function behind the scenes.
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