If you go into a game knowing the game will only have 3 encounters per LR, shouldn't you be playing a caster anyway? That's like optimization 101.I know one of my current DMs rarely does more than 3 encounters a day, which is why I play a gish with smite options.
Paladin 2 and Cleric 1 would probably be the others. Sorcerer 1 and 3 are also solid.
If War Wizard simply adds another option to the already strong list of dip candidates, what exactly is the problem?
I still think Portent is the best two level dip in the game for wizard class
Lets look at the war wizard the +2 ac is less than using your reaction for Shield spell so it is great when you run out of spell slots or if you want to save the slots for absorb elements either way you are using your reaction. I say the biggest benefit is the saving throw but still uses your reaction.
I say the optimization is better for some Fighter example Battle Master/War Wiz so they get the best of both worlds instead of going EK