Okay so the projectile badge is something you can get early on and my thoughts are this: it's fine but could be more useful.
Positives
1. It's a good and strong badge to use especially in the late game
2. It looks pretty when in action
3. It picks up Pons from a distance (better then the magnet at times)
Negatives
1. Aiming is way to pecking hard to use. I can't tell you how many times I've used it and missed.
2. The brewing hat and umbrella are pretty good. (Mainly because the brewing hat is a easy to get item from very early in the game, (you can get it in chapter 1 and use it as an attack replacement)
3. It's a badge. Let me elaborate! (You can only hold a maximum of 3 badges. When you get hookshot it basically something you need for 99% of the game. Then there's a space for things like for badges that can help you in gameplay like magnet or the no bonk badge. Then space 3 is for anything and ifyou want extra attack power then your kinda screwed if you want 3 useful and easy badges.
4. Sensitivity: it's very sensitive it's very easy to use it when you wanted to just attackyou just fire the laser which can get very annoying