This would just mean the spectrum would become meaningless as a diagnostic tool
I'm not with you there, of course the spectrum would remain as a means with which to assess and measure, especially for those who are consistent in their behaviours.
The complication's arise from those currently defined as 'not autistic' who are inconsistent in behaviour from one day to the next. For example (possibly being too specific, but for the purpose of the example), I am sure we can all relate to experiencing more than usual awkwardness in some social situations on occasion, where, on any other day, we would 'normally' cope well with the same situation. A kind of multiple personality order.
Giving human behaviours a more positive view.
Unfortunately, the autistic label, or tag, has developed certain negative connotations and as a society, we tend towards regarding those labelled as victims, whereas, there are many who have consistent autistic behaviours who are nothing but and make incredible positive contributions.
Are we not all "odd" in our own ways?
One last point regarding the difference between Aspergers and Autism, I understand to be (and I am more than happy to be corrected on this one), with Autism, we are essentially born with or develop very early in life, whereas we develop Aspergers during our later childhood (generally around puberty I think). As far as I know, there is little to distinguish between the two in terms of behaviour types. Clearly my understanding has been somewhat floored if it's been decided that Aspergers is somehow not measurable!