Heavy Carro tested with Heavy Clip seemed good to me. I am not against testing Heavy Clip without clip size reduction, which had no effect on the Heavy Carronade, but would help a lot of other guns that could make use of Heavy Clip's jitter reduction.
The tested Harpoon was not good. You can snipe Squids with it at almost maximum range without Lesmok, it was constantly one-shotting Squid armors and doing out of proportion balloon damage. Carronades and Lumberjack are almost entirely redundent by bringing one quick double Loch Harpoon and your ship lost balloon and armor in that instance. Although the testing was probably bringing results that are out of proportions, because a lot of people brought either double Loch Harpoon, Loch Harpoon/Carronade, or Loch Harpoon and Hwachas (good job on testing actual gameplay, guys) and in a comp match you won't see double Loch Harpoons. But that won't mean it is going to result in good gameplay in pub matches or generally a good idea for good gameplay.
I like the sound of the new proposed stats for the Harpoon a lot more. It doesn't kill Squids by one-shotting armor, but I am not against keeping the current piercing values, the reload is a lot shorter than before, but not too short and the reduced pull duration is not too little so it still allows the Harpoon to actually pull. I don't mind a bit more balloon damage on the new proposed stats, closer even to the tested values, but not on the value that it invalidates the light Carronade.
If at all possible, I would love it if the pull was a toggle, so after pressing right click once, it starts pulling on its own, pressing it again would stop the pull. There are multiple reasons why I would consider that a good thing and only have yet only heard one counter-argument: a player didn't want it to be an idle gun. Getting on, clicking twice, and getting off the gun again almost immediately doesn't sound particularly exciting, but the Flare is no different either and both are utility guns.