There's a serverside check there somewhere

It just uses your clock to display how much time is left on events/items that will expire. Which in this case is what confused me because you can go forward but not backward apparently.
So here's an actual game related question.
I saw somewhere here that crane is kind of the best formation. Is that pretty much the consensus?
I am currently using Konishi Yukinaga (one evolve) as my archer but I just got Mori Motonari, is Mori better? (I hope so because Konishi's stupid ability takes too long at the beginning of each round)
What's a good R tank I should be looking for? I have 0 tank units at this point.
Is there a rough team composition that people recommend? As in one tank, two archers, one cavalry or... whatever. Or is it really just "what good units did you get"?