Be able to comment out statements in actions. For example, change variable "if this then that", have the ability to comment out an old version of that statement to try out a new statement. This way you could try out something new without losing the old version or having to create a duplicate microflow and use that instead and then need to dual code changes to the original microflow.
Example:
// new version
$myVariable
// old version
/*
if $myVariable = true
then true
else false
*/
else false
*/