Αh but that was not what I meant... (also, I am from a non-cricketing country too. Watching the upcoming Ashes will be a bothersome task.)
Bodyline tactics are disadvantaged due to the law prohibiting bodyline fielding placements. Douglas Jardine needed at least 2 leg slips, leg gully, shortish fine leg and a sweeper at deep fine/long leg as to not leak runs through gaps behind square leg. Mitchell Johnson destroyed England in the 13/14 Ashes and SA in the subsequent Test series through bowling short- but at stump width or offside of stump width, and very rarely legside of the stumps or into the batsmen's ribs as Bodyline tactics would have dictated.
Add to that the law that you can't be out lbw off a ball that pitches outside leg (which as a legspinner is frustrating to no end, grumble grumble) and Bodyline as Woodfull, Bradman, Oldfield and co. knew it is something punished by the laws of the game.
Short-pitched bowling on the other hand is something that never left the game of cricket and never will. As you pointed out, the WI attack of Marshall/Holding/Garner/Croft and their successors Walsh and Ambrose thrived on it. But rarely did you see the right-arm pace bowlers go around the wicket to right-hand batsmen and attack on a leg-stump line or further inside the body. That doesn't mean a lack of hostility (alright there Geoff Boycott?) but that the hostility was orthodox.
Interestingly enough, the one attack I've seen that did try to use actual bodyline tactics in post-war cricket were the unassuming and largely forgotten SL medium-pacers of the 80s led by Rumesh Ratnayake.