Scale, proportions, sculpt... spot on perfect. I'd buy this in a rainbow of colors, though different head sculpts would cinch the deal.
If quality is up to par, this may be the most official Arcee we get. (?) Unless HasTak pulls something out of their sleeves between their larger lines.
I'm actually really sad Classics has to be the "**** stepchild" to the Movie lines, Animated, Prime, etc. It's not just a playful little PowerCore line or Robot Heroes... I don't know why it can't get more focus - a longer run, more figures, some Voyager size bots (or larger), repaints and retools release on a timely schedule... I'd love to see more than two or four released at a time.... more like a full line of toys.
We've been crying for an Arcee for decades.