Complexity is good if it's done right, but in the case of XIV at the start it was done poorly. While you may not notice it there is a sense of complexity in the current craft system and that's the concept of having a base piece of armor with the ability to augment it with more stats. With the current system it's pretty much make gear, then use some of same materials with dye to augment it with new stats.

When 1.20 hits the odd are the recipes to make the augment gear may involve alchemy or goldsmith materials which will further add more "compelxity" to customizing gear to the liking of a player. For all we know the recipe to make the War based armor may be some alchemic vial, or attaching a gemstone to it. But ya overall the process that's been started is much better then what it was before. The idea of having to use 5-8 items to make a basic weapon was just to much lol.

As the time progresses and as mentioned above the rare nodes come into play the complexity will increase at a rate that people can adapt to without feeling overwhelmed by what's in front of them.