Sorry no, you're wrong. It won't only affect misclicks. It would also reduce the demand on the player to understand their class because they won't need to understand the most basic requirement of even creating a combo because the game would do it for them. They could spam one button without realising they're doing a combo.
And you must have quite a good faith in players if you think mostly only random misclicks are why people fail combos. It's not unusual to find players who do dps as if they're completely unaware as to what a combo system is.