The Valiant design has always been my favorite. I was truly astonished that they moved on from this concept to the Defiant for the show. The Gallant variant was a step back in the right direction for me, but this ship skin would be awesome. I would be forever grateful to Cryptic if this were added.
I'm not sure what other escorts Starfleet needs, what with there being the Defiant R, Prometheus and it's MVAM twin, and the Fleet Escort. There's pure tactical, tactical with a hint of science, and tactical with a hint of engineering. What gap needs filling? If they do find a gap, real or imagined, I'm almost certain they'll get some more mileage out of the Akira before adding this.
Though evaluating this purely on the merit of it's looks, all I can say is "hell yeah".