My one big concern with the design is the positioning of the anemometer element. That location is going to give you the most accurate readings, unfortunately, it's also going to ensure that every low hanging branch, drive through 'clearance bar' and low flying bird is going to take aim at that thing. We found that to be a major issue with all of the various stations we tried (and we tried at least 4 different manufacturers and 6 or 7 individual models over the years). Those cups are almost always pretty flimsy. If you could devise some way to cover them when you weren't actively on a storm and/or sitting still, you'd probably do an awful lot to increase its longetivity.
I cannot count how many sets of cups we've burned through over the years, mostly because of birds striking it or the stress of constant spinning at 70mph just fatiguing the plastic. Even on low profile cars, it was still an issue, though its much more so a problem on my pickup truck.
