[5E] Ready Action Question

How do you all handle ready action for your players? Do you only allow calling of a single scenario or multiples?

I’m think of implementing a rule at my table where a player that readies an action can calls out a scenario and a “otherwise” option. The reason is that, we as players, often think about our options on our turn and strategize - simulating a character deciding what they would do in that moment.

An example of how I’d see this idea in use: Your character is next to a monster but there are a couple of enemies closing in that could choose you or a teammate. You ready an action so that you use Dodge if the enemy closing in reaches you to attack OTHERWISE you will attack the creature you’re engaged with when it makes their next attack.

Thoughts?