From the Salvaged Memories meta, the return of Medium changed thing the most, along with Indexing.
With Medium, ice destruction, using any anarch tools (including the return of Parasite), will allow the runner to get rid of R&D protection. After which the runner can run run run on R&D, seeing many cards. If Medium was unique, it would be an okay card, but since you can put 3 of them on the board, each run after the first will let the runner see 3 more cards.
Medium combine well with #toerh viruses tools, like Knobkierie and MemStrips. Contaminate suddently becomes a multiaccess card!
By mid-game, depending on the draw of the corp, the runner might be able to see most of R&D in one turn.
Of course, this can be mitigated with purging the viruses frequently, or make R&D a glacier. The other alternative are traps. Snare!, Archangel, Sapper, Chrysalis, News Team will deter the runner from seeing too much card in one go.
Funny part, Medium combined with Mwanza City Grid will make the corp rich in no time, if the corp does not lose on the spot.
The best mitigation for Medium is still Macrophage, which will destroy it or else, be very taxing to the runner.
The quote is great. The graphic is nice. A good card.