I've had a VP2 for close on 10 years now and it has been both reliable (apart from the UV sensor) and given me years of trouble free service. The only trouble is that in all that time the price has remained stubbornly high and the design has hardly changed. You could argue thats because the design is near perfect but it would be good to see some innovation coming through, perhaps making the wind vane and anemometer independent of the rest of the sensors in some way. The cups could be used to generate a small current to power some rechargeable batteries that powered the comms. I think it won't be long before someone hooks up a Raspberry Pi to some sensors to accomplish a lot of what the VP2 can do, who knows someone has propably printed a very small wind vane and anemometer in a 3D printer as I write...