You ideas aren't bad, but cores still aren't a part of the economy. They are the worst reward in the game, specifically because they were intended for masterworking. You are essentially saying perk enhancement and re-rolls are masterwork items. Not unreasonable. However, I don't think the current or planned "reward" system can support the additional items. People don't masterwork weapons so they can infuse. Take away infusion and under the current system, people realize how expensive masterworking weapons really is, i.e. having 3-4 masterworked weapons is reasonable, while playing the modes you want to play. Try to make more, and it's back to the grind. This is what we found acceptable. However, if you remove cores from infusion and add more masterwork choices without more core options, it will be back to famine in less than a month. That's all I'm saying. Otherwise, cool.