With the exception of the Ace of Wands, which is another kettle of fish, all the Aces have a direct relationship with the Ten of the preceding suit and all the Minors are really just an elaboration of the Tetragrammaton. For example, say you're working on a plan, then the Swords are the stage where it is formulated and brought to maturity. But, there's a danger of over-thinking, mental though must give way eventually to practical fruition. The Ten of Swords conveys such over-thinking and is the stage where the mind falls apart because of it. The next stage is not immediately the doing
part, but the potential for making material gains in the execution of your plan.
So in a way, the Ace of Discs shows the "flip side" of the Ten of Swords. Personally I usually treat the Aces with the same level of importance as any of the Majors. They also, of course, share relationships with the Fool, they're all on the brink of something, about to topple down towards the bottom of their respective Trees.