To answer your question, no. I don't have enough time to watch most of the bonus material on SD DVDS. For me, the thing I want most is to see the best HT presentation of my favorite films, after that, a commentary with some featurettes and/or alternate film version might be in order, but I don't need an entire 50 GB of material. This is just my opinion on my expectations so I'm sure others will disagree with their own expectations.
Crawdaddy
Crawdaddy