I think the easiest solution to the idea of magi-tech is a different type of mana-conductor. The problem with arcanium is its inefficiency as a conductor, unless you’re constantly infusing it with magic it just reverts to its inert state. Devourer metal (which I call hecatite) could be a solution to this, but due to its long development time as well as its inherent instability, so while it’s able to carry more energy it will ineligibility overload so it’s not viable as a true conductor.
The best solution would be an alloy of infused (calling them infused because irradiated is technically too advanced a word for the period of AO) salts and a naturally conductive metal. Now if only there was a metal that we constantly use to move electricity around in the real world and we know exists in AO … Oh hey look copper.
An alloy of copper and infused-salt would work marvelously for our purposes of creating magi-tech. It would just switch its natural electric conductivity into magic conductivity. Holding the mana longer than arcanium but at a lower power compared to the steel like metal. This gives it no combative use, but in utility would make it a more practical choice for power generation. I would expect that you’d only need a small crew of mages to be able to power a city for a week. So you just have said crew on the pay-roll to weekly recharge the grid. This way the mages aren’t being inconvenienced by having to power the place, but it still requires some work to get going.
Now this would make the steam boat a bit harder to do due to the timed nature of this alloy. However, I imagine no captain worth his galleons would neglect hiring a mage for any expedition on these dangerous seas. Especially after the discovery of this metal and its use in sailing, having a mage able to keep the boat running would be essential. At least until people learn how to generate mana without a human mind. Perhaps infused-salts or even enchantment scrolls could work as natural mana repositories?
Overall this alloy would allow for more advanced technologies to be produced, while still keeping mages relevant in society. I also think this is more likely than the War Seas discovering electricity given their hyperfixation on magic and its power. I don’t have a name for this alloy yet, but I’d love to y’all’s thoughts.
Final note: I do however have a term for this form of mana: Fulguricity.