Charge speed may also be a talking point (aside from Jet and Explo, at least). Outside of Eliter, the chargers all feel insanely fast to charge when I am playing them, as someone who plays stringers and splatting more often. I know about the relative value of the partial charges of a splatling versus a charger or stringer, but Splat Charger still feels like it charges faster than it should, to me.
Charge speed is something I've thought about myself. But at least with Chargers I feel like they're in a good spot. Yes, Splat Charger charges really fast, I agree. but I think it has to, not just because it has the one singular shot, but also because it lets the weapon be a bit more aggressive. Slow charge speeds means the weapon has to play more safe to get it's shot, like E-Liter. Splat Charger charges slow enough to allow short-ranged weapons to approach it a bit, while also charging fast enough for particularly skilled and confident Charger players to go more aggro. That kind of versatility is important to make the weapon fun to play with and againts. Not all Charger players like the highly specilized sniper role of the Liter.
This is also why it was so important for the Squiffer to get the mid-air charging charge speed buff back in the day. It made it actually realistic for the weapon to play more in the midlines like it wanted to. And it's partially why Goo Tuber is kinda bad.
Not to say that charge speed isn't something that shouldn't see some experimental tweaking. The Snipewriter could maaaaybe get a slight nerf to it's charging speed. It's only barely slower than Splat Charger, which doesn't mean much when the weapon gets 5 times the shots. Though it is pretty ink-hungry as is, so maybe it's fine? Ahh, but it has pretty good uptime. Hmm. Hm.
It's an interesting topic. I think you could have a differing opinion from mine and be completely correct.