Over in hackaday,io, Radomir Dopieralski [deshipu] is also a fan of Fritzing and put together a project showing how to do different tasks in Fritzing.
So far, the worst I have noticed is that a trace bend cannot have 4 traces branching out. Otherwise, I have not found other showstoppers with Fritzing. I do not use the autorouter for the latest boards.
The following posts show some of the good and bad of designing boards with Fritzing.
One thing led to another and... Here is a version of @simonegiertz daily motivational board. DRC passes, component spacing is correct. If you want the gerbers and BOM, head over to @oshpark https://oshpark.com/profiles/ArduinoEnigma This is not going on @tindie, if somebody is hardcore enough to make it, go ahead. @davedarkocom #LEDMotivationalBoard #MotivationalBoard #HabitTracker #GoodHabitTracker