Also, this doesn't make any sense in the way the game works.
first off, the cryotech is so cheap because it's 2* and you can make it on mist alone. Some people have second accounts just for crafting 2 of those a day for extra cash. So your example is worthless. A 3* fetches a much steeper price, usually. You can make a profit off of those, or just make a safer, steadier profit with your 2*. A lot of people don't bother with lower start recipes for themselves because it's a hassle and the step up in price at the AH is minimal.
Second, you couldn't have proffessions if you had bound items. Otherwise no one could make a 5* helmet for themselves unless it was their proffession. So you'd have to buy it off someone else, which would be annoying as hell. Or you'd have to buy 4* from a player, level it up, and then take it back to that player to upgrade again. A huge waste all around. It would really just defeat the purpose of leveling, bound items, and CE usage – in other words, you would have to play a different game entirely for it to work. There are other ways to make money; just because some economies work well to make money crafting doesn't mean this one is.
i dont like the idea of limiting what i can or cannot make