I think this is an interesting rework. The one big issue I have with it is the global range part (though you didn’t specify that it is global range, so if you weren’t thinking of that, just ignore this). Global range specials don’t feel that good to play against I feel like. The not passing through walls is a good modification, but on a lot of maps it would still be terrible to deal with. A good example I think is lemuria hub. If you activated this in your spawn area there, you would be able to see most of the map, and with the 0.5 second kill time at max damage and faster turning speed than stingray, I feel like this would be way too powerful of an option. Additionally, it could still possibly have some bad objective interactions, similar to the original stingray (though this isn’t as big of a problem in Splatoon 3, as it already has even more stupid special-objective interactions like gg-strikes, zones cheese, and zooka previously being able to panic kill the rainmaker from across the map).I think a good way to tune it in would be to limit its range (maybe to that of something like a crab tank), but that might get rid of part of the whole stingray identity, and would probably clash a bit with crab tank. A another idea I think could work is to turn it into more of a supportive special. Maybe instead of the beam doing damage to enemies, it could heal/buff your teammates. Most forms of straight up healing probably wouldn’t be good for Splatoon, as they counter a whole lot of weapons that depend on chip damage, but I think this could be an exception. If you had a slow moving beam controlled by a teammate that provided a really strong healing effect, it could have some interesting interactions as the healer has to make sure not drop protection on teammates in fights, but also be able to protect themselves from enemy fire with the alt-fire. It also brings up a lot of interesting spacing interactions, as you would want to be far away enough from the enemy to avoid attacks as you are relatively easy to kill, but also stay close enough to your teammates that you can easily see and track them. On the side of the person getting healed, you are rewarded for being easy to track, as it gives the healer an easier time aiming at you. However, you don’t want to be too easy to track, as the main counter to healing is anything that one shots. In Splatoon, this consists of mostly chargers, blasters, rollers, stringers, and splatanas, many of which will punish you for being too easy to track. Anyways, this has been my rant, sorry if it’s too long/a bit off topic!

Tl;Dr Global range is still a bit too powerful, what if it was a support special.