I would prefer one that aligned the like named keys, if it fits in screen. Makes it dead easy to scan the values. That said, it is just another pun on the text as art thing. In that it doesn't really scale, and you are going to upset someone by not having a codified tool for automatically doing this. (I don't recall seeing align-regex in any popular tool.)
foo.bar.baz = 10
.biz = 12 // foo.bar.biz
..boz.baz = 31 // foo.boz.baz
etc. It basically combines really brittle context-sensitive grammar production with complete lack of greppability.