Corp: Surely three Archers and a Valentao is enough to score behind, right? You only have 5 credits and you don't even have anything on the table...

Runner: shakes spraypaint can with intent

Although it's a bit situational, in the right deck, this card is incredible. With a Poison Vial, a Slap Vandal or charged Botulus somewhere on the board, and a few credits, you can effortlessly run through a 3-deep remote piled high with big ice for the winning agenda steal (or key asset trash). If you instead use Rigging Up to get down the Poison Vial and have the Slap Vandal in hand as Arissana (or spend a click to pre-emptively install it on the first ice before running), you can even go 4-deep. Although it's a one-time trick, ask Criminals how effective those can be. This is best at getting into a remote late-game that the Corp can't imagine you can break out of nowhere (which is also when they're most likely to put an agenda in it).

Even if you don't have the opportunity to maximize it on a big server, Spree can be situationally useful in just repositioning your installed Trojans without having to do Simulchip flickers, saving you precious resources, and preserving accumulated Botulus counters.

I wouldn't slot this in a deck running regular breakers hoping to get giant Kyuban value; as funny as it would be to surf a Flux Capacitor down an ice stack for big charge value on a Cataloguer or Amelia Earhart or something, it's surely not worth the deck slot.

IIUC, by moving around a Chisel before each approach, Spree can accrue up to 3 virus counters on it off a single run, while also shrinking all three ice on a server by an average of at least −2 strength each (cf. a local K2CP Turbine), even post-purge. Or, off just one of Spree’s three ‘charges’, you can move a big Chisel onto an brutal piece of ice (like an Anansi or Trebuchet) that's outermost, after having built up several counters on it by running through or bumping off a gentle piece of ice (like an Ablative Barrier or Ping) that's elsewhere, which UAV can't do (even if it could yank back viruses, it would reset their counters anyways).

P.S. Design-wise, my favorite Shaper effects are the “moving stuff around”:

• re-hosting trojans between ice (Spree, Urban Art Vernissage);
• swapping ice between servers (Tāo Salonga, Escher, Inversificator, Cordyceps);
• re-arranging cards within a deck (Indexing, Cataloguer);
• “spinning” (uninstalling+installing) programs between zones (Simulchip, Scavenge, World Tree);
• “painting” between ice subtypes (Pelangi, Panchatantra, Paintbrush);
• and moving power, virus, or even advancement counters between installations (cf. a “Trick of Light × Exploratory Romp”)…which haven't been printed yet.

(So I hope Spree will still see some play in Arissana, despite how good Burner and Trick Shot will be in any Shaper.)