The biggest problem would be the complexity brought on by not only multiple types of production, but one of which takes about five paragraphs to explain. Consider every other means of production that we currently know. They are all fairly simple, excepting in part the warp-in which protoss are going to use. Even this, however, is much more straightforward and simple than your complicated system of alternate unit creation.
On a side note, I obviously haven't been for for too incredibly long, but I generally have a higher opinion of the people on this forum than the sort who make hate-threads on battle.net. Whoever it was only hurt TL.net in the eyes of the greater internet community.
Edit: I also found it interesting that whoever made the thread on battle.net repeatedly avoided revealing their TL.net identity... why would you make a thread like that if you know that doing so is an act that would be frowned upon by TL itself?
Edit Edit: Unless of course AngryPedestrian is your TL nick as well, I can't remember if I've ever seen that name on here before...