you can get 20 points max per tile, you get about 700 points for all of the tiles and 1400 worth of items for all of the tailed beast tiles, it costs 700 to open all tiles. so while the redeem is horrible its not the main place to get your value in this event.

just because YOU don't see a value in the rewards doesn't mean there is non, tactics are a huge power booster. this event would be good for low powered player who are early on in the game since it gives lots of things they will need. great plates isnt a good event for me since i dont need the coins or the medium refines, and 4 ninjas arent worth spinning on if i want power, so the events depend on your perspective.

3 out of 12 rewards in the tailed beast attack event are worthless to me for power gains, 6 of the 8 rewards in the great plates are worthless to me for power gains, so 1/4 vs 3/4 are worthless, which do you think i would rather spend on? sure for collectors the great plates event is good because you get lots of ninja frags, but its horrible if you want power.