Why is there no Score Attack for Olympus Coliseum in Kingdom Hearts Recoded?

In Kingdom Hearts Recoded, the absence of a Score Attack mode for Olympus Coliseum is primarily due to the unique design of the Coliseum itself, which focuses on battling waves of enemies and bosses rather than traditional level progression. The format of the Coliseum, where players engage in successive battles, may not lend itself well to a scoring system. Additionally, the developers likely aimed to maintain balance and avoid potential exploits that could arise from scoring mechanics in such a combat-focused area.