I like the approach and think something like this is fun but i don't understand the businsess case at all. I would have migrated MySQL 5.5 to 5.6 first, than c

I like the approach and think something like this is fun but i don't understand the businsess case at all. I would have migrated MySQL 5.5 to 5.6 first, than cleaned the shit out of it, normalized everything, added a few indezes and suddently realize that there is not much left to do. I like to work with postgresql but if you have 1,2k dbs which are more or less not claned up and crappy, what are they used anyway?