Special Forces is probably Sonya's best variation since the patch fixed the b332 whiff issues, but the biggest issue she has in this variation like a few people have already mentioned, is her special move cancel window (namely on block). She can actually jail you into a block infinite with b33212 (if you have no meter) as long as her drone is up, but using drone from block strings even offline is just too inconsistent and hopefully is something that can get addressed next patch.
She actually could use some tweaks to her frame data: she could use more hit advantage on 121, her 222 string isn't used at all and shouldn't be -17, b33f4 should be higher than -9 since b332 being -5, cancelable, and extended with 12( and still cancelable) makes it redundant, and her throw shouldn't be -4 which hurts her mixup game in other variations in the corner.