Plated Edges - How to design?

A follow-up question I forgot to ask:

How wide do the custom bridges need to be? In the post above, I spec’ed them at 4 mm, but wonder if you got a default value for the bridge width.

Regarding my thoughts on manufacturability - would it work better with more bridges like so (just a quick mockup on the Edge.Cuts layer):

Best regards,
Yannik

Edit: I missed that PTH slots are nibbled no matter what width is used: