I usually use Bundle By Name rather than the plain Bundle for clusters, and certainly for all typedef clusters. The only time not to use it is when you need to do a multi-key sort, since that works really well, and the cluster data structure is just temporary. 99% of the time my clusters are typedefs, and using Bundle By Name always makes the code clearer and easier to debug by inspection.

However there is a disadvantage in that if I add something to my cluster, then existing bundle by name nodes will just use the default value for the new item, and it's not always easy to find all the associated bundling nodes. This often leads to bugs.

In contrast, I use enums a fair amount, and I disable the use of "Default" in the case structures, so when I add an item, my application breaks in a bunch of places, and so I am forced to go fix them all and in the process most of the potential bugs are eliminated right away.

My suggestion is to add a right-click checkable property to the bundle by name node, requiring it to have all elements explicitly wired in. Then if I turned this on for a given node, the VI would break whenever I add an element (just like it does when I remove an element).

It would also be helpful to have this on the unbundle by name node though I realize it's not very labview-like to be forced to wire a nodes outputs.