Crit Stat Check Enders for fights? (Patreon)

Question: should I add crit stat checks to fights that would instantly end them/skip a lot of the damage/attacks/moves? This is in order to account for situations where the player has much higher stats than the fight presumes them to have.

The downside, however, is that people on story mode will probably be missing out on like 70% of the fights content because they auto-pass all checks.