To me, an ideal ASL dictionaey would on the internet and/or a DVD. It would not only have word-to-sign alphabetical entries but also hand shape-to-word entriess. Each sign entry would include not just the basic sign form but also demonstrate the sign in various usage forms. That is, verb signs would include demonstrations of directionality, tenses, durations, and frequency. Noun signs would include appropriate corresponding classifiers. As appropriate, signs would include non-manual markers and facial grammar. Regional variations should be included. A section on idioms would be cool.
That's what I would like.
I have several books and websites that cover some of those things but not all in one resource.