Yeah I know.
1 - Is the 90 dpi to 96 that important. I make everything with inch or mm, and if you look in the svg it is in those units. Does the vector program convert everything back to px. I know it does in INK for text, because that is the standard svgs have to have for the other stuff it was designed for.
2 - Fz snaps to weird stuff at times. The Zener snaps on the middle of the pin, but if you remove the number next to the pin it snaps on the 0.100". It somehow snaps to the number.
3 - Some of those faults are features. A zero stroke node on the end of a pin auto assigns the end of the pin if it's labeled pin in the svg. Saves time in FZ not having to click a pin, select graphic, and the N,S,E,W or Centre. Look at the Pololu A4988 and it's red tips in SCH.
4 - BB and SCH are not that important so long as they snap to a 0.100" grid. PCB has to be accurate so things fit, and I've seen pins out, but that looks like there person making it didn't know how important it is.
5 - FZ adds those groups when you export a part, and if you export and import the same image it gets buried in groups.
It's going to be a lot of work, and I've seen these problems in Kicad because parts can be made by anyone, and now that the creators have stepped back, is there any future for FZ. If you ask me the part creation using a complex external graphics editor that isn't 100% compatible is going to kill FZ in the end.
To give you an example. I'm trying to make a tutorial to standardise part creation, but the first svg that I made won't mate with the CORE IC perfectly. It works fine using another part, and I have made svg from scratch, but not the CORE part I made it from. I've basically spent a whole day to film and edit it and now has a problem, so I'm basically teaching people the wrong way to do it because it only works 90% of the time.