Ok, so from my own experiments and from what I've read here, here's a list of what's screwed up thus far:
- Zippinus is banned
- Forge Ore dictionary doesn't work at the moment, but is currently being fixed (I hope)
- In Zip's version, the advanced machines only receive direct redstone current (the indirect redstone thing made life tons easier; and, funny story, when I switched from 1.23 to Zip's version, my Rotary macerators weren't being redstoned, so I stuck a lever on it, and turned it on, and it blew up! Thankfully, none of the other machines broke, somehow, and I eventually determined it was because my charging bench MkIII was right next to the macerator, so the lever gave it redstone current too... if you have the charging bench add-on, you know what that does!
- Lastly, the buildcraft pipes no longer work as expected with any of the advanced machines: so go unhook your contraptions now! For example, items pumped in through the top land in the slot where you put batteries, etc.