I just want to clarify something
A recent patch reduced engine damage from Tar and it seems it isn't being used very much anymore.
Reduced engine damage to 20 damage (from 25), Increased Cloud Duration to 35s (from 30), and Increase Cloud Damage to 15 Shatter/s (from 12)
Reduced engine damage means that it deals 5 less damage per second to YOUR engines when YOU use it, same way you damage engines with kerosene, phoenix claw etc. so that's actually a
buff for Tar Barrel.
Increase Cloud Damage is where an actual value of the cloud damage to enemy's engines (or yours if you fly into your own cloud) is found. Damage from the Tar Barrel has been increased by 3 Shatter damage per second, and with Shatter damage having a 2.0 ratio against both Guns and Engines they take additional 6 damage/s so that's another
buff for Tar Barrel for you.
Makes you think that if you damage your engines less AND you deal more damage to people in the cloud people would actually use it more, especially that there was also a bug fix for the Tar Barrel damage, where it now always deals damage at the end of the tick, while it didn't always do that before. The only actual change for the Tar Barrel that could be considered a nerf was a change of the cloud animation that people complain about, like it's expanding in a weird way or something. I personally have a problem with the cloud not showing up immediately after using the skill. I get my engines damaged, but I can't see the cloud being made behind me. Other than that, it's all buffs for the Tar Cloud.