As it so happens, based on the last data I saw, you would be right to rank Bessarion a lower priority.
Though, I would say, the number of suicide attempts doesn't always neatly correlate with passenger volumes.
There are factors in terms of what's nearby.
But also whether a station makes an attempt...... I hate to say easier, but trains enter at a higher speed, but may approach blind.
Targeted deployment to start makes sense, though ultimately there is virtue in its universal deployment in a subway setting as you will push people from one place to another to some degree.
The barriers also serve the secondary purpose of reducing litter on the tracks (if full height). Which can reduce fire/smoke issues as well.