Charge time is an issue against players who move fast and are unpredictable. I’ve mained fusions since Taken King and some players are near impossible to hit because they bait the shot and change direction at the perfect moment. Charge time can also be a real hindrance against strong players who shotgun ape (you mention shotguns can be inconsistent, but fusions are as well). Fusions can also be super cheesy (aim assist feels more generous than in D1), so I’m not saying they don’t require any nerf, but I don’t think they’re as easy as you make out in your pros and cons list. Good players will take advantage of that charge time.