Currently killing zulrah is extremely tedious due having to teleport out, and go back to the wizard. Im suggesting to implement the teleport that is currently in 07scape. The scroll that is on the ground that teleports you out back onto the pier.
The second option would be to make zulrah to drop 50 scrolls like it used to.
Also cerberus is the same way where you can only kill one per trip. this can be easily fixed by creating a spawn timer so it respawns.
These two quality of life improvements would really help PVM in my opinion :)