Problem there is that the thermostat is in the hallway. We don’t live in the hallway. We live either in the living room or bedrooms depending on the time of day
Can you get individual thermostats for each room? I know you can get moveable ones but that won’t work well with TRVs.. or will it? Hmm…
This comes back to the original design of your heating system, you have radiators calculated to heat a specific size of room, this calculation is based on various aspects, size, construction, proportion of outside walls, direction outside walls face, etc, etc.
Your heaing is controlled by the controller in conjunction with a calculated radiator. The other rads in the house with TRV’s allow you to easily vary the temperature in the room to aid your comfort. Some rooms you may want warmer, some you may want cooler that is my understanding of what TRV’s are for.