Hi dokipen -
I think I understand your problem a little better now. For what you are trying to do Translucency may not be the best route to go. I would suggest taking a look on the forums at Ulrich’s grass shader which works very well and provides a simulated opacity through subsurface lighting but keeps the sorting of a masked material. Many different users have come up with some great answers to foliage shading and have posted in that forum thread.
Thank You
Eric Ketchum