In the Heroes of Maple update, one of the greatest skill change resolutions came to pass, the conversion of many active buffs into passive skills. This resolution reduced skill clutter on your keyboard and total time needed to recast your buffs. KMS had a second coming of this in the first patch after their BEYOND/Override update.
Although this resolution greatly improved gameplay QoL, there's still a lot of active buffs
as well as toggle skills Edit: You know what, I've decided to leave toggle skills alone. that could easily be converted into passive skills. However, there are principles for this resolution. These principles are: Must not be a party skill, a toggle skill, a skill with cooldown, a counterattack skill, a skill that enables a mobility skill to deal damage, a skill that provides infinite ammo, a Shadow Partner-type skill, an Enrage-type skill, a Hyper skill, or a 5th Job skill. Plus there are a few additional exceptions to this resolution. The following list shows all the possible candidates and their reasons for why.
Common
Weapon Booster skills - Almost all classes have a "Weapon Booster" skill, and the link below is the discussion on how it can be changed into a passive skill.
http://forums.maplestory.nexon.net/discussion/12201/make-weapon-booster-skills-passive/p1
So far, Bowmaster, Wind Archer, Wild Hunter, Phantom, and Xenon had their boosters changed to passives.
F/P Archmage
Elemental Decrease - The active effect gives the same stat you can get from your Insight trait.
I/L Archmage
Elemental Decrease - The active effect gives the same stat you can get from your Insight trait.
Shadower
Mesoguard - With Meso Mastery, Mesoguard's Meso consumption would hardly affect your Meso balance. At the very least, this should be a toggle.
Shadower Instinct - This skill can be changed into a passive skill by having it act like Explorer Magicians' Arcane Aim.
Dual Blade
Self Haste - The only place where movement speed and jump boosts that are received from temporary skill buffs should be in is party buffs, which Self Haste certainly isn't.
Buccaneer
Crossbones - The active effect simply increases your damage.
Corsair
Jolly Roger - Most sources of Stance come from passive skills. In fact, Dawn Warrior's Soul Pledge, Dual Blade's Thorns, and Xenon's Offensive Matrix were all originally active self-buffs.
Cannoneer
Counter Crush - This is an inverted entry. Counter Crush should be converted into a Toggle Skill. Click
here for more info.
Pirate's Spirit - Most sources of Stance come from passive skills. In fact, Dawn Warrior's Soul Pledge, Dual Blade's Thorns, and Xenon's Offensive Matrix were all originally active self-buffs.
Jett
Bounty Chaser - The active effect simply increases your Critical Rate and your Weapon Attack.
Slipstream Suit - The skill simply increases your DEX.
High Gravity - Most sources of Stance come from passive skills. In fact, Dawn Warrior's Soul Pledge, Dual Blade's Thorns, and Xenon's Offensive Matrix were all originally active self-buffs.
Blaze Wizard
Ignition - The skill is basically Explorer Thieves' Venom that must be recast every 5 minutes. At the very least, this should be a toggle.
Mihile
Enduring Spirit - Demon Slayer's Black-Hearted Strength, originally an active self-buff, is solid evidence on why this skill should be converted into a passive skill.
Aran
Drain - When would you ever NOT turn this skill on?
Snow Charge - I/L Archmage's Freezing Crush could justify on making Snow Charge passive.
Evan
Elemental Decrease - The active effect gives the same stat you can get from your Insight trait.
Blessing of the Onyx - The skill simply increases your Magic Attack and your Defense.
Mercedes
Water Shield - Demon Slayer's Black-Hearted Strength, originally an active self-buff, is solid evidence on why this skill should be converted into a passive skill.
Ancient Warding - When an active buff that gives max HP expires, any excess HP past your original max HP will be lost. By changing this skill into a passive skill, this frustration would be removed.
Luminous
Arcane Pitch - The active effect gives the same stat you can get from your Insight trait.
Demon Avenger
Ward Evil - Demon Slayer's Black-Hearted Strength, originally an active self-buff, is solid evidence on why this skill should be converted into a passive skill.
Diabolic Recovery - When an active buff that gives max HP expires, any excess HP past your original max HP will be lost. Furthermore, it doesn't make sense that you have to keep this skill on to regenerate HP, when other classes that have HP regen acquire them from passive skills. By changing this skill into a passive skill, this frustration would be removed and the skill would be consistent with other HP regen passive skills.
Xenon
Circuit Surge - The skill simply increases your Weapon Attack.
Kaiser
Cursebite - Cursebite works similarly to Hero's Chance Attack, Mihile's Righteous Indignation, Demon Slayer's Insult to Injury, F/P Archmage's Burning Magic, and I/L Archmage's Storm Magic, all of which are passive skills. So Cursebite should be a passive skill as well.
Angelic Buster
Power Transfer - Turning Power Transfer into a passive skill can work out very well because it acts like Blaster's Blast Shield and Marksman's Aggressive Resistance.
Iron Blossom - Most sources of Stance come from passive skills. In fact, Dawn Warrior's Soul Pledge, Dual Blade's Thorns, and Xenon's Offensive Matrix were all originally active self-buffs.
Star Gazer - The skill simply increases your Critical Damage.
Hayato
Military Might - When an active buff that gives max HP/MP expires, any excess HP/MP past your original max HP/MP will be lost. By changing this skill into a passive skill, this frustration would be removed.
Kinesis
Psychic Armor - There's already a lot of Avoidability/Evasion effects granted from passive skills or skill effects.