Current state:
Suppose you have some neat code that bundles/unbundles elements from either a typedef-ed cluster or a class. You even provided free space in case some names are changed in the future:

But then, when you change an element's name to a longer one, this happens:

Now, to have the same neat code as before, you have to surgically select, move and realign the Bundle/Unbundle nodes correctly:

Since these nodes are resized in a centered manner, to keep neat code without the need to realign everything by hand, you must provide free space both on the left AND on the right.
Remark 1: The same issue can happen when you select another item with a different width in the Bundle/Unbundle node.
Remark 2: It seems all nodes of class "Named Bundler" and "Named Unbundler" are concerned. So that also includes the Waveform / Digital Waveform / Digital Data Bundlers/Unbundlers.
Proposed Idea:
When a Named Bundler or a Named Unbundler updates its own size (either because the typedef is changed or because the user selects another item), it resizes to the right instead of resizing from the center. So, if you want to provide space for further modifications, you only need to put space on the right (and not both on the left and the right). Also, I find that resizing to the right is quite consistent with the left alignment of the element names.
Regards,
Raphaël.