Was mainly talking about max fear, not fear in general, like this one as an example.
max fear will block the generation of devotion if I read that correctly
Let's grab the sensual massage
Don't see a way to impact the slave_rate['fear'] in a sensual message as an example. But let's say it's fair on that one. Since it's an sensual message after all.
Looking trough the code, with that < 5 block in next_day_slave_moral I don't see how you can reasonble lower max fear without waiting for ages for the passive devotion to kick in.
Anyway we decided to make own aditions and play with that.