Perhaps the collaborations would be more successful if designers looked at the opportunity to address apects of design that have to get overlooked at higher price points where the emphasis is on luxury. It seems the more inexpensive materials don't get respected for what they are, they're simply used to downgrade existing design elements and that's where it goes wrong. A very witty and approachable take on Temperly's feminine detailing, embroidery and embellishment could be successful but its a thin line. That being said, I think there is something wrong, somewhere, when a designer can't problem solve. A designer should be able to dress people at all levels; their skill set, training, experience, critical eye should allow them such versatility. To complain against high street copying only to copy your own designs for mass market retailers is unfortunate.