I agree with the idea of making strategic and tactical targets worth more... Im just not sure it can be done as easily as some think.
That depends a lot on the approach taken. Right now i see three different ones
1) Meddling with the worth in score points.
Seems to be difficult for the very reasons you just pointed out. HTC would probably change the whole way score points are computed in detail. (one way could be limting the score points a single bomb could gain). And if hangars are getting worth way more than towns in terms of score... well, we know what then will happen

2) Making strat having a bigger impact on gameplay.
Now this is way more difficult than many players think. It's terribly easy to totally wreck gameplay balance with this, especially when taking into account that most players do not actually care for these things unless there is some very drastic effect tied to it. Even now just a little more, but coordinated effort could have a big impact on gameplay, but the ignorance about this is quite astounding

3) Make only strategic targets count for score in "bomber mode".
I still think this is quite a simple and logic change, but then it had been my own idea, so I might be biased
