After the first ninja event i send a msg to Flare about this topic but nothing yet so i will make a post of it. If you feel the same please make a comment on this post.
Im concern that using ninjas isnt good all the time. So far, i notice the game is slower (is like my king is havier) and my wolfs howling is delay (this is due to the fact that ninjas go between my wolfs and their target before the howling). This affect my raiding a LOT.
Also, im forced to scream with my king in order to prevent ninjas going away and killing the units im going to steal with Black Magic spell at the very start.
But this problem has a simple solution, Flare doesnt have to make raiding with ninja mandatory, they could let us choose not to use them before every raid. Just add some button to deactivate ninjas. I understand some players will use them, but some others wont. Freedom of choice is the key.
P.d.: before some “smart” guy repond that the answer is not to participate on the event. I will say we participate for the rewards: uber chest (to melt them with my luck this time) and pearls… ninjas are colateral damage.