Originally Posted by Jaidu
Not necessarily essential, but almost every game in which I play has decided that readying an action does not move initiative. First, it seems like already using your standard for an immediate action is enough of a trade-off. Second, it makes a bit more bookkeeping for a DM. Third, it kind of lowers incentive to ready over delaying. Fourth, if the trigger of the readied action doesn't happen, the character wastes their entire turn.
You can use this to burst down enemies by taking two actions without giving them a chance to react in between (three with an action point).
That's completely fine if your group doesn't abuse it, just saying.