Or, atleast tone down the number of energy you need.
I have no issue with the system itself, but it is quite a nuisance when you need to first got the recipe, find the ingredients, get the crowns, then finally pay a large amount of energy. Keep in mind 100 energy is about 4,000 crowns at this point, so a 3-star weapon could easily end up costing about 9,500 crowns, plus material hunting or buying.
So my suggestion is basically, lower the use of energy in alchemy, or make it regenerate faster.
I'm fairly certain that 9.5k is still cheaper than buying a 3star weapon from a vendor. >.>
You could also get someone else to craft it for you (for the most part), which eliminates the cost of the recipe.