1 pointTechnically, it could be done. As Wim mentioned, performance is a major constraint. The JSON functions are slow compared to the built-in functions for return-delimited lists, and very slow compared to repeating variables.
1 pointIn theory: yes. The question will come down to whether the JSON building and parsing functions are faster or slower than the regular text functions I guess.
This leaderboard is set to Los Angeles/GMT-07:00