Separate the lights from the sensors
You can buy stalk motion sensors a-la-carte for about $20 from reputable makers. You wire up your lighting as if it's going to be switch-controlled, except you run 3 live wires between the lamps and the motion sensor location (which can share a junction box with one of the lamps, or be located cleverly to get a better view of the geography). You can also put the motion sensor in a more serviceable location.
- White = neutral (to all lamps and motion sensors)
- Red = switched-hot (to all lamps and motion sensors)
- Black = always-hot (to motion sensors only)
Now, when a motion sensor goes kaput, you swap only the motion sensor. There is no reason for valuable/expensive lamps to go into the landfill.
Also, a bespoke setup like this lends a much better aesthetic. It doesn't look like somebody bought a gimpy "2 lights and a stalk sensor" thing from CostCo and slapped on the wall... it's architected lighting designed to fit and flatter the building, with a motion sensor possibly concealed.
You can also expand into low voltage 12/24V LED lighting, which gives a great deal more design freedom. 12/24V motion sensors are definitely a thing, and are half the price of 120V sensors since they don't need internal power supplies or 120V relays.