Hi S/E,
There was an interesting twitter thread last night where @Paul_Hudson provoked a lightning brainstorm of new ideas for the Swift Language. (You need to click on the first message for some reason to see the thread proper.)
A couple that chimed with me were "switch as an expression" and a shorthand for "if let optional = optional {" to be simply "if let optional {". More than a few are worth proposing...
Thoughts?