There is currently a scarcity of Rera runes in game. This makes leveling enchanting and crafting armor enchants at the Vet1 tier extremely difficult and costly. There are several things that make me believe that this is due to recent programing changes.
First: Extraction Mechanics
My success rate for extracting potency runes from veteran glyphs has plummeted. Previously, all glyphs (including veteran) resulted in a consistent distribution of results. Now, I often receive no recovered mats from glyphs of veteran rank....not even an essence. This also occurs for glyphs below my crafting level.
Second: Extraction Reward Tables
There is a problem with the way the "extracted rune" is determined during deconstruction. In addition to not receiving a rune at times , I have also received a Cura rune (lvl9 potency) when extracting a level 7 glyph. This should be impossible
It would be like extracting a Kuta from a green quality glyph.