Does anyone care if Tuple.slice() returns by ref?

[Saurabh Das via Digitalmars-d]

On Sunday, 7 February 2016 at 13:13:21 UTC, Ola Fosheim Grøstad 
wrote:
> On Sunday, 7 February 2016 at 13:01:14 UTC, tsbockman wrote:
>> That is essentially what my PR does. But, some people are 
>> unhappy with the thought of a slice's type not matching the 
>> type of the equivalent standard Tuple:
>
> Well, Tuple is flawed by design for more than one reason. IMO 
> it should be replaced wholesale with a clean design with 
> consistent semantics.

Why is the design flawed?