Current meta?

Paladin is okay, with holy thrust build you can solo any boss and still killing MG/1 shot boss with oath.

The new passive lv360 called "Solid Shriner" is very good, when you use the skill "Grand crusade" and receive the buff "Cross", it will reduce HP and mana cost of Guardian skill by half, and in case of holy thrust skill, it will only reduce mana cost in half, and not only that, the Cross buff also increases the damage of all skills based on the enemy's remaining health!
if enemy health is between 100% and 76% = 0% increased damage for all skills.
if enemy health is between 75% and 50% = 10% increased damage.
if between 49% and 25% = 20% increased damage.
if below 25% = 30% increased damage.

in the past, it was possible to use only 2 holy thrust with 1 mana bar, because each holy thrust cost 35% of max mana, so 3 holy would spend 105% maxmp, but now each holy cost 17.5%, so it is possible to use 5 holy thrust with 1 mana bar (17.5% x 5 = 87.5% maxmp) instead of just 2 hahaha

Now, for new active skill lv 360, well...is not thaaaat nice, this skill was the old lv260 paladin skill in the I-mode version of the game that was replaced by Knight Oath, its name is Order Pain. to activate this skill, you need 50% knight heart, it will give you 10s indomitable buff, during this time if you receive fatal damage. (fatal: damage greater than 35% of your maximum HP), you will reduce this damage by half and will consume the "indomitable" buff, after that you will receive a new buff called Faith for 10s, during Faith you cannot reduce fatal damage, but Faith increases rate cut and range cut, I don't know the values, probably 20%. its possible to reactivate indomitable during faith, guaranteeing fatal damage cut and rate cut, but it requires a lot of %bar (100%), only Holy Thrust spammer can do this with ease...
My paladin killing luna doll 10m in 10sec with spam holy thrust:



My paladin killing leviam with 2 holy thrust:


In both videos, you will see that the damage increase when boss HP be low

Stats: 

Max STR/VIT/DEX
100 R/G/B 

Sets: 

MaxHP/Rate Cut/Disable Half-Heal:

450k+ MaxHP
150k+ Guardian
400k-600k+ Holy Thrust
48% Autoskill,
64% RC 
Chance for 50% damage recovered. 

Shellbreaker/Disable Heal:

400k+ MaxHP
250k-950k+ Guardian (Shellbreak affects the whole Guardian skill, AOE mobs caught in it also activates Shellbreak)
400k-600k+ Holy Thrust
62% Autoskill
20% RC
Chance for 100% damage recovered.

Holy Thrust:

350k+ MaxHP
100k+ Guardian
500k-1.5m+ Holy Thrust
69% RC

Knight's Oath(All Elements):

200k+ MaxHP
3m+ Knight's Oath 
200k-400k+ Guardian
400k-600k+ Holy Thrust 
65% RC

These are my build/setups. Not the best but hopefully it shows that STR/VIT/DEX isn't technically dead, Holy Thrust's faster and higher damage are just prettier to look at. INT/VIT/DEX also only gives better Holy Thrust damage when using Klein Love because of stats and it being a Magic Sword. Each of my setups have their own purpose to them allowing me to play whatever roles fits the situation, these stats are also without the use of any consumable item strengthening so the damage and whatnots can be further enhanced. I won't be listing gears as that is up to whatever the players deem more useful for them rather than just copying and pasting setups.

Oh, yeah. Welcome back.

Sorry but as stated above I won't be listing gears.

It's true that we have some support skills but INT from gears usually fill up for the lack of MaxMP more so than raising the stat up itself. INT only benefits from using magic swords, no ATK from BoO, no added damage to Guardian, and even Holy Thrust uses ATK instead of MATK though it only affects on a smaller scale.