The point here is...customer service.
The customers asked for it via the Operational Partnership Agreement. We are here to serve them so we comply. It's that simple!
If the consequences mean that complexity rises cos we can't make the levels then we restrict the traffic, the customer gets the feedback, then they, the customer, decide what they want us to do after the trial ends based on this info.
Whatever they decide, be it reduced capacity due to the 270kt restriction or going back to the way we've always done it, we have to do what they want. Like it or not, we are not here to only serve the pilot customers, we have to serve the airlines who buy the fuel that goes on their planes as well, and they are the ones with the say so, not us or the pilots, cos they are the ones who ultimately pay our wages.
Get on with it, feed back what you think and let nature take its course. We're only going to get more of these daft requests in future so I guess we ought to get used to it and remember that the customer is always right - even when he's wrong.