Ice Splitter vs Fake Shot?

I'm only lvl 49, so you can take my advice with a grain of salt, but I'd say yes to fake. One grenade is all that's required from a luring/odd sniping scenario and fake, though less useful when you have ice splitter, still is useful for monsters immune to ice. Even if you only use it a few times during an event or something of that nature, it seems like it'd be more worthwhile than grenade.

As for wings and recoil shot, I'm just getting used to them myself, and I can't help but think that they only get that much better when they finally get maxed. If you really are unsure about it, try throwing in one more point into each, testing them out during training or just goofing around. That should give you a good idea what that level would be like, then you can put it up some more if you want, or if you really preferred the previous amount, you can take some out with some sp resets.