Don't want the data, just the control...
I'm perfectly happy setting the 7 day timer for hot water and heating as needed. What would be more useful is the ability to remotely (i.e. smartphone app) change the programme and turn on/off as I see fit.
I don't want any other party constantly collecting data, I don't want anything integrated with the cloud, I don't want all that complexity, I just want a simple way of accessing the controls when away from home, and more generally, a better interface for adjusting the programme settings.