Hitech-
I think having more strategic targets to bomb would be beneficial to AH. Why? Right now it seems everything is funneled to the industrial complex. If there were motor pools, railroad yards, supply ports, coal mines, mini-cities, or other such targets to bomb that would add X number of minutes to OBJ down times (call it an interruption of the circle of industries, etc), then perhaps what was once a major part of AH may return: attack missions by Mossi's, A20's, 110's, etc. Attacking the industrial complex with anything but high altitude bombers is suicide.
I say keep the industrial complex as the key part of the strategic strategy, but having some out laying targets of lessor value but yet still important enough to defend would only add to the depth of AH. Offering variety would be a huge benefit, imo.