Launch a range extender or upgrade to mesh network
Tado ticks many boxes but it's behind the competition in its lack of signal booster / wireless repeater. I'm unsure whether to take the risk and buy the system for my relatively large stone house given the risk of radio dropouts. If I knew I could add a range extender if required, I'd have the confidence to buy. Perhaps an extender is a better option than using a mesh network which might drain batteries more quickly.
Whichever you do Tado, it would be great if you could make a statement now that it will be backwards compatible with the hardware currently on sale.