There were reasonably competitive (but underplayed) Opus decks for a long time. I don't think that's changed very much, (though opus tends to be better vs NBN, which got a lot more popular since last year's GenCon). The major player in the fall of Pro Contacts, aside from NBN just being generally good against it, capitalizing on tags to trash and scoring windows for Astro rushing, is Prepaid VoicePAD. In decks that previously might have gone with Pro Contacts, Kati Jones, Daily Casts, etc, most likely because of memory issues with Opus, you can now just spend 6 inf on lucky finds and you're basically done. You don't need RDI or basically any econ resources, can float tags if you feel like it, and never take a gigantic tempo hit for economy. You tend to draw through your deck much faster, and maybe most importantly, if you don't have prepaid on turn 1, it isn't as awful as if you miss your Pro Contacts and have to choose whether to interact with the Corp or to keep above 5 credits in case you ever actually draw it. Once you get going, you can Same Old Lucky Find and it's like you had an Opus in play anyway.
TL;DR, Prepaid also uses no memory, and it is more efficient, consistent, and tag-resistant.