You can't really do complex in a video game. All it really turns out to be is time consuming. Original crafting in FF14 was 'complex' and it was a royal pain to do.

Once you know how to do something, it's more about repeat and rinse, determine the fastest way from point A to point B and in the case of FF14, manage inventory. Anything mechanics try and do to diversify that ends up being convoluted and a time sink.