Figure out what main you feel best on, that will cut the ninja pool from treasures you are interested in. Then look up the best endgame teams available (and those with premium ninja that will come in the nearest future like edo kages, angel konan etc) and start gearing towards that team. Right now top teams tend to use mostly event ninjas, from pre-gnw treasure ninjas roshi and bee still will be used, maybe skillbroken danzo but thats basically it. Danzo/mifune/darui are used mostly by lightning, which basically autolose to han/masked man. After skillbooks, super rares from kage might have a few minutes of spotlight. If you end up being the strongest (or vs group where u are faster) barrier is fine, otherwise its no point. So generally, drawing kage will help you for a short time in pve mostly before you obtain event ninjas. Personally if I started fresh, Id just go for roshi and rest into gnw treasure, skip other treasures altogether