I get what you mean... But for most Classes, it's essential to get several Advanced Classes and to master them, taking the Active non-hidden skill with you to the Advanced Class you want to end with, so you have more variation and power. Example: Level 100 Warrior and Gladiator Vs Level 100 Warrior with Master Classes with Gladiator as End-Class. Definitely, the 2nd one have a huge advantage over the other. The Master Skills can play a huge role in there. Power of the skills are higher (most of them are..) than the base-class ones. The one with Masters can throw several Mastered Skills at you that can do a fair huge amount of damage with here and there maybe a base-class skill. At the other side the one with only Warrior and Gladiator, can only do 3 Gladiator skills and the Warrior ones. Of course it's another story about who will actually be having the upperhand over the other... Avabel is getting boring fast by the way, if only going for one Advanced Class, since you'd Master one class in no time (personal opinion). I shouldn't be too ignorant towards having more Advanced Classes or even the other Advanced Classes themself, if I were you; just giving an advise. Spoiler: From my own experience, I used to be ignorant toward Wizard and Elementalist.... But when I actually unlocked them and play on it to master... I found interesting Skills I find useful. Looking at Wizard my eyes were only seeing Wind Thrust (Cyan Tornado). It still does a bit... But I'm using Dark Edge too now. That wouldn't have happened if I never looked at each skill. Depending on where you are going in-game, you can change/adept your skills beforehand just to make it a bit easier for yourself. Looking at my Wizard example, I mostly use Wind Thrust while farming F18, and Dark Edge when Rushing1. I'm sure of it that these similar situation COULD apply to every class.