Skill point distribution is now almost useless in jobs,duels, fort fights, exp, money collect. I remember in version 1 there were different ways to distribute skill points if you were builder, FFer, dueler, even for opening a specific job!! Now it is 80% about Lotery item, you dont even have to think much on how to use your precious skill points, and if the lvl cap will get higher, it will be even worse.
You are spot on with this assessment, everyone is a jack-of-all-trades, but a master of none.
Now I'll be clear that you didn't need to be a pure fort fighter to do well in forts, but you did, at least, have to have some synergy in your build, like being a dueller and having some transferrable skills.
I don't duel anymore, because a pure builder in a melee defence set is about as strong as a pure dueller in an attack set, because there are now thousands of skill points in play with a random number generator.
I don't fort fight anymore because duellers can kill me in 1 round as a premium adventurer, because there are now thousands of skill points in play and no diminishing returns for damage.
I don't adventure because some whale has a gun that determines that he wins the game.
Quest rewards are not satisfying, or competitive with just grinding for exp/cash, and quest items don't compete with tombolas.
Construction is not satisfying, it's just clicking a button every few hours then waiting.
Grinding is not satisfying, because there's no PvP to grind for.
None of these core gameplay issues will be resolved by adding more levels.