Ok I thought of this because even though I am high in power, I am terrible at making teams. So my thought is if you have someone on your friendlist, allow them to see what ninjas you have if they have the setting turned on so that your friends can help you. If you have it off and they are on your friends then they can't see your ninja. I think that would be a great idea. If it gets added, the default setting would be off for the people who dont know it got added and dont want to share the ninja they have.

edit: the on off setting could be on your friendlist tab on the top or on the bottom "show ninja? [yes] [no]" and it wouldnt make show any different on their friend list or anything, just show an extra option when they click on you on their friend list to view ninja