Aggressive Trendsetting (🐟👗) is “purple AR-Enhanced Security”. But:

• It triggers off installed-only, not anywhere. (In particular, you can still R&D-lock them with Stargate.)

• It costs [click] (if you don't allot them), which is less than 2[$], [click] (if you detag immediately).

AT (like ARES):

• protects assets with a “click-tax” (dragging the Runner down to three-click turns like the Corp, all else equal).
• is “self”-Fast-Advancing. Being a 3/Y (and being in decks with fast-advance/asset-spam cards): you can FA it with a single Nanomanagement; you can NA it, spamming it out with a single Top-Down Solutions. In particular, once the 1st is scored, the 2nd/3rd copies get easier and easier to score.

PS. While AT is no ARES, I wish NSG printed more agendas that explicitly incentivized “rectangularity” (IE. single-iced servers, like Fully Operational does). Not just “horizontality” (like Trendsetting) or “verticality” (like Sisyphus Protocol). But maybe you'll want to ice your spam with a single Bioroid, to pinch their clicks? (IDK yet, but that'd be cool.)

Flavor-wise, the Runner must constantly follow/purchase new trends (like the aquarium-suit in the artwork) for social-engineering and/or counter-propaganda, which wastes their time.