I'm not sure what you expect me to say? If you want the AI to devote all their time to working on accuracy, all that will happen is that the player will ignore dodge (because it becomes meaningless). If you want them to dynamically assess such need, then it becomes a preparatory problem, where they don't have enough time to react and field a counter (by the time the threat arrives, it'll often be too late). This, of course, completely ignores the fact that the AI is incapable of recognizing such weaknesses in the first place. Also, the problem is not just with the AI, but that you can use dodge to clear powerful monsters and gain a massive advantage.
As for magic, the AI haven't shown any capacity for setting up a mana economy that would allow them to keep casting magic for extended periods. So they might get a few spells off, then they fizzle out. Also remember, they aren't deploying mages stacked with damage bonsuses, so the damage of their spells can often be completely ignored.
You're talking about drastic upgrades on things that could be fixed much more easily by reducing some dodge numbers.
If the AI begins taking way of the warrior, and way of the mage, I would expect that we would see accuracy contributions from some champions, and perhaps deeper spell use from other champions.
Meanwhile, some accuracy is available in troop traits, so we should expect them to show up in rushed troops if the AI notices or anticipates serious problems from dodgers. But, yes, the AI would need to be able to assess army strengths and weaknesses.
That said, I have seen the AI ramping up to get 40 mana per turn from a single town with a couple essences and shards. This was on insane, and was perhaps an overspecialization on refined arcana but it's not like building mana is outside the realm of possibility for the AI.
Also, there are many kinds of spells, and some can be effective enough without damage bonuses.
Anyways, the AI needs to be fixed -- if all that happens is the dodge numbers get changed the AI will still be crippled in other respects (like: magic). I suppose we could cripple magic, also, to keep from having to fix the AI?