I would agree with #5, they should of removed the need to reach the last rank and just start everyone fresh.

As far as winning than losing in arena, They should of made it without any negative consequence for losing. No one likes to have to climb out a negative hole. And just raise the points higher per each rank. At least more players will keep trying.

I personally was at - 13 and took me about 5 hours just trying to get to even. I eventually just gave up for a bit. And now trying again, after someone said to let the big winners get to the top first. I'm waiting 10 mins a match.

Definitely some more improvements and listening to the community needs to happen or this game is going down. The only thing that really keeps me interested is the chance of playing with those upcoming ninjas from Jinchuuriki and what other sealed treasures they bring out eventually.