As far as TFD glitches go, i didn't get into a lot of detail in my tutorial, there is just so many!! I basically told you to check it real good and fix them as best as you can. Every time i try to make a TFD map i get super frustrated by all the glitches before i am finished, so i have only finished a few. Not to mention all the misspelled words on the parts, misspellings drive me crazy!! I for one am glad nova realized that BHD was not ready for prime time and delayed it...I would rather wait than have another on time TFD-like product - LOL
Another reason i don't go into detail on all the TFD glitches in my tutorial is this info can be used for evil as well as good.
When you run your map under a full test the glitches will be exposed soon enough.
My personal favorite glitch in TFD has gotta be the magic window on the second story of the hotel. If you don't know what I'm talking about say so and I'll gladly explain it.