I do a really big projects with up to 10 hours "fine" material and In spite of i use the movie studio i think it will be the same for vegas pro.
All i think i laid out in pictures.
I think this software is the best!
Thanks!
P.S.
Comment for picture 1 - ...shows transparently or even hide the glass from event if you press shift-cntrl-i.
Comment for picture 3 - "Slip all takes" is not the way.
Comment for picture 4 - may be this would call "nested event". Think about it.