People who say that the Aerosparys are good haven't been in or watched the upper levels of the Ranked. NO ONE and I mean NO ONE uses an Aerospray in A range.
After the most recent patch, Kraken has lost a huge amount of its luster. Unless you're flanking the person in some way or right on top of them, Kraken is not that good. The only way you win when coming head on is if that person is out of Ink (it happens) and can't start swimming quickly.
Beakons can be good if folks recognize and acknowledge them. One person slipping behind enemy lines and planting some beakons can be very useful.
We shouldn't rule out the ever trusty Splattershot Jr. Bubble is still really useful, even with the extra knockback received. I've lost 1 on 1 fights because of a well timed bubble.
Blasters have found a niche in Tower Control. The fact that they can get up close and just pummel the tower is more useful than you'd think.
In general though, I think there's a lot things we haven't seen yet, and we aren't going to see until the August update when people can really start coordinating with each other. For example, I think the suicide build (lots of Quick Respawn combined with Comeback and a blaster) is a great build for Tower Control. People just need to know that that's what you're running. When we can start seeing teams and coordination that comes with being on the same team with the same people that you know, we'll see a whole different game I think.