Note: this is being written as of The Path to Carcosa with no mythos packs of the cycle published.
This is less a review and more a call to consider including this card, even before we know what it can upgrade into. We know that Strange Solution could be upgraded to the very powerful Strange Solution, Strange Solution, or Strange Solution and as Archaic Glyphs is much more expensive to "activate" we can expect that the eventual upgrade will be likewise more valuable.
But who should take it, while the upgrades are still unknown? Seekers who can afford to carry two fairly useless cards (with one useful skill icon) are reasonable choices but Akachi Onyele gives the best risk/reward opportunity and the reason is her fairly bizarre deckbuilding restrictions.
Akachi can take all mystic and neutral cards, as you would expect, but then can also take cards with uses (charges) up to level 4 and then occult cards of level 0. Guess how many cards with uses (charges) are not already Mystic cards (as of The Path to Carcosa)? If you guessed zero, you're right! And how many Occult cards are level 0? Precisely one: these Archaic Glyphs. So to make Akachi's deckbuilding restrictions make any sense at all, the upgrade for Archaic Glyphs will be a seeker card (Hand. Item. Occult. Tome) that will have uses (charges) AND will probably not have that many charges on it so as to make Akachi's special powers that much more valuable: namely the ability to automatically add an extra charge onto the card as well as being able to recover it back in hand with Spirit-Speaker.
This speculative review will be revised once we know all the upgrades available for Archaic Glyphs.