Well done on Redash - It looks and feel very nice. I'll definitely keep an eye on it, but Metabase's 'Questions' and visualisations are a bit more polished for now.
quite possibly. I've also read some of their bug threads and they're quite discerning (protective?) of what makes it in from the community. so, money+perfectionism, perhaps.
but honestly - their 'questions' interface is a hell of a lot more fun than sql. thanks to ORMs, my sql knowledge is really quite rusty as well and the simple/constrained "select, filter, aggregate" options on a single table or data source lets me faceroll what I need.