Feature request - simpler constructors (+ Tuple Syntax)

[Xinok]

How about this?

this(this.a, this.b, this.c)

This clearly shows that you're initializing a variable in the object.

I don't like the use of auto here because:
this(auto a)
I read this as:
this(T)(T a)


Another idea I've had for a while is creating a list of members to 
generate a tuple. Take for example:

obj.(a, b, c)

This would generate a tuple with members a, b, and c.

This same syntax could be applied here:

this(this.(a, b, c))