Unless you go through the trouble of specifically placing more +1/+1 counters on her through different means, Arcee, Acrobatic Coupe will always only be a 3/3, while Arcee, Sharpshooter will likely only deal 1 damage each activation
The problem with it, is that it ends up covering a big chunk of the image by default
This static ability fits right into the aggressive strategies of red and Rakdos
Surrak and Goreclaw Starting off with a green creature that does quite a lot with trample in Surrak and Goreclaw
Without flash Hollowhenge Overlord would probably die right away, but sneaking it in on an opponent's end step makes it that much more likely you'll get at least one trigger from it
the same manufacturer even provide a side-loading box for the same price, with many of the same design elements found in the more traditional top-loading box