I love the Oscars Highlights badges: http://www.imdb.com/badge/ However, only ceremonies starting from 2005 are present. Will there ever be badges for older ceremonies (pre-2005)? I would be willing to help create the missing lists for the older ceremonies as I study the Oscars.
If IMDb would create Oscar badges for all years, the number of badges would become - IMHO - way too much. I therefore think they should change to Oscar decade badges. If you've seen all films that have won the Best Film - Best Actor - Best Actress - Best Writing - Best Director Oscar from a certain decade, you'd get that badge. That way, all Oscar years will have a badge without having over 80 (!) badges.
Clearly IMdD doesn't care about badges. I suggest for you to check https://www.icheckmovies.com/ which has literally hundreds of official lists and awards for completing them. In fact, you can upload your IMdB ratings and they have lots of lists IMdB related.