While there have been some notable exceptions, in general, language changes which only locally eliminate a constant number of tokens at a call site are unlikely to gain traction, especially when the alternative (writing x + 1 and x - 1) is so concise to begin with.
Compare this with, eg, generics, which can eliminate large swathes of code duplication when used properly, or data race safety, which eliminates a large number of bugs in one fell swoop.