Inkjet blasts should go back to their previous effectiveness, but keep how easy it is to take them down where it's at.
I feel the Inkjet got nerfed hard on a very knee jerk basis. The improved hitbox against it was very necessary, no question. But to weaken the blasts, and simultaneously lessen the ink spread by the blasts, it got hit much harder than needed. And with the TTek's special charge being the highest in the game, even a good weapon like that is less useful when it takes forever to get its special, and the special itself is not that amazing.
I still do fine with the TTek since it's a weapon that fits my play style very well, but all the nerfs really caused a lot of people to drop it. I see regular Splattershots getting more usage these days with the buffed Splashdown being very effective overall. If the devs wanted to discourage more people from using the TTek, which was overused no question, mission accomplished. Lowering its special charge or restoring the ink jet a bit would be fair. Even if I am glad the weapon is used less so I look less boring by using it a lot. :p
For extra balancing, I actually would love for most weapons to take longer to get their specials charged. Despite my complaints about the harsh special charge for the TTek, if everything took longer to get their specials I would be totally fine with the current requirement. Even though specials in this game are far less volatile and game changing, the beginning of battles can sometimes feel swayed by which team can spam their special better. For example, the Aero RG needs more charge to get the baller. Even an Aerospray can be pretty deadly when it can get several ballers in one battle.