Why would you expect to be able to use two different colour calibration tools simultaneously?
Another difference between the previous and current model appears to be increased memory. Not a compelling reason to upgrade now, but probably a sign the previous models will soon stop getting updates.
As for losing the remote why not just have a place where remotes go? A lot of people seem to be incredibly lazy and moaning about not having a feature to help find a remote control is indicative of it. There's a simple rule in our house - all remotes are returned to their proper location. Even a five year old can manage this.