Rescue being used as a weapon

[Lambdafish]

It's a troll ability.

By that definition, so are many abilities that target other players. Have you ever considered Shadewalker and Smokescreen troll abilities? You can kill a BLM with a single shadewalker. In stormblood, troubadour could also kill the entire party if used during mechanics that set your HP to one (which were extremely frequent).

Just because abilities have the potential to be misused doesn't make them bad, or troll abilities, and labeling them as such really limits the creativity and tactical quality of the job system.