You are correct though because a lot of prophecy is revealed as it unfolds. ie When we see two of ....... in Jerusalem and these two are actually being noticed by the earth, it will be pretty obvious who they are for us Christians who have read Rev 11. Therefore you could be right, we don't need to know now but it will give us extra faith and confirmation when we recognise it when it does unfold. I prefer to know in advance though, like Daniel knew beforehand by reading the scriptures that the Babylonian exile was only 70 years long. You could call this useless information, he just should have rested and trusted God that all will unfold in its correct timing. It would have happened anyway. But for Daniel who was desperately looking for hope for his people, it was important to know. For me its an attempt to reveal a neatly fitting puzzle somewhere between the preterist and futurist positions in order for us all to go into the tribulation aware of just about everything that is about to occur. No unpleasant surprises that could damage our faith.