I have issues with removing the jury generally, but in this specific case I would be quite concerned that any convictions secured under this pilot would be quashed or re-tried once the pilot has ended. I want to know what happens to those trials conducted without a jury if jury-less trials are found to be unjust or not robust enough.
I don't think it's fair to the victims to put them through that uncertainty, having to go through a retrial or worse having their attacker released, and if it was my case going to court I wouldn't want this.