One of the most frustrating parts of Zealot and Psyker is targeting the wrong enemy with your ability.
As a Zealot, when your charge targets the wrong enemy, you may end up in the middle of a horde with no cover instead of on top the gunner you tried to charge at if a pixel of a poxwalker moved in front of your cursor at the wrong time.
For Psykers, when a priority target is hiding within a horde, you will greatly struggle to brain burst the target instead of a random poxwalker within the group charging at you.
A simple fix for this would be to have these abilities automatically target a pinged enemy your cursor is hovering on even if other enemies are in the way of your cursor as long as they are within LoS. This would be intuitive for all players and should help avoid the greatest pain points for these classes.