When did in-game dunking become legal?

[chseagle]

Been reading through the handbook some more, specifically the history of rules, and noticed several that used to be in effect that have been either disallowed or changed.

One of those that changed was that when subs reported to the table, that they have to report their number as well as the number they are replacing. However that rule got overturned. Thinking to the newer scoreboards out there that require player numbers, should that rule of been reversed?

What other old rules do you feel need to be reinstated?