Runescape Slayer Needs Unique Abilities

Since rs have been run for so many years, are there something really need to be revamped? RS Gold players do really have something to say.
Slayer needs unique abilities. Since slayer, lore-wise is a skill that is entirely about learning new techniques to kill monsters. How about actually learning new techniques from it, rather than just gaining the magical insight that allows us to deal damage to previously imprevious creatures by wailing on them exactly the same way we do other things?
This could include specialized abilities that have increased potency, or added effects against certain types of enemies. Maybe ways to disable certain monsters rather than just wearing helmets to ignore their special abilities. Maybe instead of just bringing earmuffs along, a noive slayer could learn that if he punched a banshee in the throat at the beginning of a fight, it'd stop screaming at him, or learning that a dragon has an extra organ that helps it breath fire and that puncturing said organ would cause humorous results the next time the dragon attempted to do so.
Maybe learning that there's a certain technique to hitting stone-bodied enemies that would reduce their defense, or attack depending on what part you were breaking. Previously it was suggested that demons had a weakness to magic, maybe there's a particular light based spell that they hate that we could learn to improve combat ability against that class of monster.
This wouldn't just have to be for slayer specific monsters, but anything that gets assigned as tasks, anything that could be considered a family of biologically similar enemies. Anti-dragon abilities, anti-humanoid, anti-demon, insect, rock, there's all sorts of enemy themes that could gain specialized abilities from the slayer skill.
I suppose it could just be done as a level-unlock, but I'd rather see this stuff as something you go to a slayer master to learn about, maybe through the current slayer reward system. A guy who trains for long periods to learn how to kill specific enemies should have an advantafe over a guy who just works out to hit harder.
Already have a few concept abilities, mostly just flavor and general function, like Abyssal mines, Earth shaker, Dragon strike, Blinding powder, etc.
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