Yeah... I gotta go with Scott on this one... It's not even in the ballpark of accurate, so I'd not be content with just "throwing on a vest" to make a Rebel Fleet Trooper out of that figure. Just because it has the helmet doesn't make it accurate... Why not just throw the helmet on the Death Star Trooper then, ya know? His shirt's closer.
I'd love to see the tech re-released on a card though to army build, but Fleet Troopers wear buttoned shirts, baggy pants with large pockets (cargo pants), boots w/the pants tucked into them, and technically the technician should have a helmet WITHOUT the neck guard extension. All techs had the more rounded helmet that's more natural to the original piece it was created from (naval flak helmet made to cover earphones, etc.). So technically the helmet may not be 100% on for the tech, but that I can live with if they get the re-used RFT helmet.
Add in the fact he needs a military style holster that hangs off his hip, the shirt has a collar, and folds over his right chest where it buttons, and all that stuff... It's really not accurate to a RFT at all.
Hasbro just needs to get going with the RFT resculpt and done right. It's an army builder, so why skimp? Even the Yavin Guard seemed to do well at retail.