Wouldn't necessarily need to be convoys for airfields, bases, ports, and strats (although it would be nice to have more strat targets).
Just add various shipping convoys/freighters/sampans, a more extensive rail network, marshalling yards, and convoy routes. Just, really, a whole lot more targets for the attack planes to hit. Some pilots probably would like the attack role. Others would like to patrol to kill those pilots.
For it to have a strategic impact would be a bonus, but not a necessity for AHII. Maybe if/when we see AHIII?