While the Bodyline tactics might have been developed as a tactic to contain, the results thereof changed cricket for the better because it reasserted the fact that cricket is a sporting contest between 2 teams and that nothing was more important than winning (within the confines of the rules). I personally give Jardine and co. a hand of applause everytime I read up on their exploits because it took big balls to continuously use the strategy in a hostile environment that some say bordered on physical violence being practiced on the visiting English team.
When I look at Bodyline through the context of cricket history, I always dwell on the irony that when negative tactics are being practiced against Australia, its deemed as bringing the game into disrepute but when Australia is doing it, its considered being competitive?
As an example, Lillee and Thomo totally decimated Clive Lloyds team on their first trip to Australia under Lloyds captaincy. When Lillee bowled, loud chants of "Kill, Kill, Kill" reverberated through the stadium and Lillee was trying to do just that...kill. Hit counts were gleefully tallied and wickets were a second attraction to Lillee hurting batsmen. When Lloyd returned back to the islands and rounded up Marshall, Garner Croft and Roberts and started practicing their own "kill, kill, kill", the aussies started playing possum and the Windies fast bowlers were labeled as being "unsportsman" like and "negative".
As far as I'm concerned, play the game hard, use any strategy if its within the confines of the rules and human decency and let the rest take care of itself.