In an effort to get the overall failure rate down, you will find yourself tweaking seemingly insignificant parameters, and [Worthington Assembly] proposes that you reconsider your 0402 and 0201 ...

Kyocera AVX successfully developed the world’s first compact, high-capacity MLCC with an industry-leading capacitance value of 47µF in the 0402-inch size (1mm x 0.5mm).