das hättet ihr

you should have

→ das
phrase Uncommon #13,827
you should have Used with a past participle and usually sollen to express that you plural should have done something. Literally, “that, you would have,” but the phrase commonly introduces a reproach or criticism about something that was not done.
GE: Das hättet ihr früher sagen sollen.
EN: You should have said that earlier.

Das hättet ihr eher erkennen sollen.

You should have realized that sooner.

Das hättet ihr mir längst sagen sollen.

You should have told me that a long time ago.

Das hättet ihr schon gestern tun sollen.

You should have done that yesterday.

Das hättet ihr in Erwägung ziehen sollen.

You should have considered that.

Das hättet ihr mir sagen sollen.

You should have told me that.

Oh, Tante Bethany, das hättet ihr nicht tun sollen.

Oh, Aunt Bethany, you shouldn't have done that.

— Schöne Bescherung (1989)

Das hättet ihr mir früher sagen sollen.

You should have told me that earlier.

Das hättet ihr niemals sagen dürfen.

You should never have said that.

Das hättet ihr eher tun sollen.

You should have done that sooner.

Das hättet ihr mir niemals antun sollen.

You should never have done that to me.

Das hättet ihr längst tun sollen.

You should have done that a long time ago.

Das hättet ihr nie sagen dürfen.

You should never have said that.