why $ is need to access array [negative index]?

[mw]

In Python it's such a convenience to be able to access array 
element from the end:

arr[-1]

in D, we can do that too, but need an extra $: arr[$-1]

I'm porting some code from Python to D:

   int[3] signs;          // sign: -1, 0, 1
   int sign = -1;         // for example
   writeln(signs[sign]);  // Range violation

// Error: array index 18446744073709551615 is out of bounds 
signs[0 .. 3]

(yes, I know I can use AA, int[int], but it just make things 
complicated)

Can we have a DIP remove / make optional `$` in this usage?

Thoughts?