Yy to the important point alice makes above.
We will end up with a group of people who are not 'PIP' worthy, yet not worth minimum wage either???? This is nonsensical!
It's completely disgusting too.
But, where the Tories lead, Labour / others will follow 
The EVIL thing is - it is NOT all about money / productivity -
re BCBG's friend's dd:
"She points out that if the employer were Govt assisted to fund her daughters place at work this would still be cheaper than daycare."
However her dd's workplace assistants wage is funded, it is still cheaper - as well as in this case clearly 'better' for the dd - to work in this job - than be stuck in daycare.
It is cheaper to pay DLA to those who claim it as the % of fraud is miniscule than to pay ATOS to humiliate a whole group of people - whilst ignoring their Consultants medical Reports -
This ISNT about money / productivity - it is ideological.
It's divide and rule and it's frighteningly effective.