Scorched Earth’s tooltip is phrased the following:
“Bleed chance from all sources is converted to ignite chance and effects related to bleed now depend on ignite instead”
Since Hail of Arrows is classified as a DoT skill, it naturally does not benefit from “on hit” ailment effects. But this wording makes it sound as if any type of bleed chance will apply and turn into ignite. Meanwhile, any sort of increased ignite chance, will not.
For example the 3 stacks of Elemental Arrows with the Elemental Barrage passive which increases ignite chance by 200%.
Even though the latter does not mention it needing a hit, I’ve been unable to notice a difference (which is an issue of its own if it indeed does not apply, since it does not mention the requirement of a hit).
Testing a long duration skill like Hail of Arrows and its DoT interaction has been hell. Thanks to RNG, the ignite sometimes ticks for 50 and sometimes for 400 when running out. Even as I try to get my % as close to 100 as possible, it’s impossible to get consistent results with the same methods.
P.S. Please add a dps meter and a way to show ailments on enemies.