Well.. I just want to say that without tobi it'll be harder to beat p2w players (I'm f2p, Sage jiraiya was luck pull), and yeah I also have a team with Scarlet/Tobi/Hinata. This is a game where in a fight we can put a lot of combinations, ones better than others. Tobi will be nerf but until that comes you can make good teams with him :)
This team...
http://www.subeimagenes.com/img/im1-1665641.png
C*most kill this one.. but also you have to read the enemy to do that...
http://www.subeimagenes.com/img/im7-1665643.png
And yes, there's others f2p formation that I have hard time to fight but well, is up to all of you to discover those formations XD