You can’t have deterministic crafting without heavy penalties. I mean you can, but at that point might as well play an MMO that rewards you for the time spent completing objectives. I can’t speak for everyone, but at least for me I enjoy ARPGs for the loot hunt. If I can continuously craft the exact item I want without setbacks then I’ll eventually get bored since I can easily make T20 items with enough time spent. Then it’s all of a sudden a huge jump to get exalted items. The curve is off.
The current system is fundamentally flawed. Straight up. POE does some deterministic crafting but they put it behind so many loops that it doesn’t feel like it. LE straight up does it from the get go. You can easily get a T9 - T12 item that has all the stats you want and I find that boring. I personally think the crafting system needs to take more of a step back and put more into drops being important. Exalted items being dropped only is a step in the right direction, but it’s not enough.