As per the title,

Would it be possible to have  agris essence / ancient anvil extended to the upgrading of alchemy stones?

Trying to craft alchemy stones (probably) has the lowest chances in the game - we cant actually tell since players are not even shown the odds.

The sale price on the mp is so comically low, that the market is basically dead, and anyone wanting one has to self-craft.

Adding a backstop for people who are really unlucky with them, would be appreciated.

I dont really care about it since its 100% min max item for the "dedicated" players. I dont think and anvil system for alch stones will in any shape or form satisfy anybody. PA will not make it easy and how many taps PER YEAR do those "dedicated" players have?

Just reform the whole thing or something else.