- suggestion: Glyph of despair should not cost any forging potential. Given how the forging range is now any craft could be the last. Sealing an affix and then not having enough fp to add another affix feels bad. Glyph of despair is already not guaranteed to work. Removing fp for it would ensure you can at least make one craft afterwards.
Playing around to try to find the best place to start using Glyphs of Despair is one of the “risk/reward” layers of the glyph. Attempting to use it frequently or early and then min/maxing affixes after is probably not the best approach.
Glyph of Despair would lose a large portion of its depth and risk/reward if we allowed it to be used at 0 FP. One of the interesting parts about the glyph is the more I try to increase the affix I want to seal the less likely it would be for me to seal it but more rewarding if I seal a higher affix; the more you attempt and fail you might lose that opportunity. You have to think your choices, and really plan out what you want to do, attempt to seal that T4 or try on the T2 and more likely succeed then weigh the odds to how much forging potential you have.
That being said, I would love another glyph that is designed around an item with 0 FP. I don’t think Glyph of Despair is the right fit for that.