I needed 5 more frags for Hana style clothing for so long, because it got taken out of events after new outfits were released. I asked for it in the feedback survey every week but it never showed up in events. Dont know if Oasis just stopped reading them a long time ago or if they didn't care.

But it looks like Oasis FINALLY decided to listen to feedback from the survey because Hana style is in Konoha outlets this week!

So yes, the feedback survey is important. if there's a ninja or item you want Oasis to add in events, ask for it in the survey. If you do it, maybe they'll see your feedback and add it in next week's events. As long as you aren't asking for good ninja in fireworks because they won't do that.