I wish people tried to formalize what a "good taste" is in programming. Here's a simple programming language - combinatory logic with S and K combinators, and

I wish people tried to formalize what a "good taste" is in programming. Here's a simple programming language - combinatory logic with S and K combinators, and you can create a new combinator by naming any expression of combinators, and use it. What constitutes a "tasteful" or "readable" program in this language?