My issue is that there are so many weaponskills, and the elements on them aren't obvious, that it's impossible to memorize the skillchain chart. I've still never had it explained in a way that makes sense, why skillchains work the way they do, and the names of most of the skillchain effects don't convey what element they are. I've been in the game since 2002, and I know you have to do moves in a certain order, with a delay inbetween, but as for why the system actually works how it does, it makes no sense. The icons for WS in the menu don't seem to have any color coding based on how they chain, and the visual effects also don't give indication. The holiday event for picking the moves the NPCs use was frustrating when the moogle is scolding me to remember my elements, when I have no idea what element any of those moves are in the first place.
I have to rely on an external web site to tell me what skillchains are formed by what skills, and if time is of the essence I can't get it done in time. I've played a mage all my time, so I can magic burst, but forming a skillchain is something I haven't been called on to do.
Skillchains are like American Football to me. Nobody has ever been able to give me an understandable explanation of the rules so that I can follow why people are doing the things they are doing, so watching or playing is boring. George Carlin and Andy Griffith also failed in that explanation.