and I'm not sure if I missed it but, no, do not just add cocoa butter to cut the sweetness. Won't work and will really screw with the texture.
There are plenty if people who like white chocolate and so no need to bash it. Plenty of flavor pairings listed above - I like tart citrus like passionfruit with mine. Another brand option is El Rey, who's white continues to win top awards. I also have played more with the Caramelia and Valhrona Dulce (mentioned above). The Dulce is very chemical tasting to me, but the idea of a caramelized white offers new avenues to go down.