Auto-resolve doesn't help. Total War has auto-resolve and they still force you to play out the battles yourself, because if you use auto-resolve you take unnecessary losses, especially in siege battles.
I'd rather have a game without tactical battles at all, instead of a game where I either have to choose between fighting tactical battles myself (which I don't like) or getting somehow punished for skipping the battle.
No tactical battles is exactly one of the reasons why I switched from total war games to CK2.
So how about the "no battle" mode that disallows player to anticipate tactical for the whole play-through? In that case, skipping the tactical battle isn't a punishment anymore since none has the advantage anymore.
Or game time doesn't pause while I'm playing the tactical battle, which would mean that while I'm leading some men on a battle map everything else goes horribly wrong because I'm not there giving orders. Ping pongin between the maps could be possible, but it would be confusing especially if there was multiple tactical battles happening at the same time.
This is the idea that I really want to promote. I want a games where you have to choose between a general and a strategist, not both. There is two distinct option. You can be Hannibal who engages in battle and wins great victory against enemy, but expose yourself to political threat in your backyard. Or you can be a Roman senate who sit comfortably in the court and decide to whom the army should be entrusted, it is politics that matters. Each style has its own advantages and disadvantages, none has a edge against another (although we knew that Punic War called the Romans)