A company wide style doesn't quite get it done. Is your style not to allow high kinded FP coding? (because it is too hard to understand). If so does that mean you don't allow libraries written in that style, like SLICK?

We had PHDs and very senior engineers, and they thought debugging common libraries like slick would take them weeks of work and they opted for avoiding that entire type of scala. But that is hard to do, because its a lot more than a coding style.