Actually yes, which is why I have one. I’ve been working slowly on a clean up of core parts for a while. The problem is likely to be convincing Kjell that it is a good idea. I’ would be suggesting making changes to the breadboards which is central to most all sketches in Fritzing. While my changes are an improvement, if something turns out to be wrong it will break a lot of things so if it was my decision, I too would error on the side of “it works as is so lets leave it alone.” I don’t think there has been any modification to any of the breadboards in at least the 7 years I have been involved with Fritzing and probably a lot longer than that (probably for exactly this reason, it isn’t broken don’t try and fix it and maybe break something!)
It wouldn’t be that difficult to make one if you want one. Breadboard would be a little exciting graphically but not all that bad. The connectors for the servos are standard. See this tutorial for a for instance (not quite as complex but same general idea)
Peter