I've suggested this a few times to shellmates and usually get "Oh god why didn't I think of that" from them, so who knows, maybe it'll help someone here. Since the Mor Dhona nodes' cluster slots never change, I found it useful to rearrange my Ward skills to match the order of the nodes.
Lightning > Fire > Wind > Water > Ice > Earth
Even if you use a handy macro for applying the wards, this helps me as a visual cue to remember which node to strike to expose the cluster I want. Hope it helps you a bit. c: