Possibly by the spring of '44 Harris could have been replaced with a commander who could use the bomber force....more efficiently. Less targeting of whole cities - more of specific militarily important targets, for example.
However it was 'of its time' where not just equipment or tactics or personalities but public opinion, convenience, mind-set, feedback from the raids in terms of losses, analysis...trying to give a black & white answer now is pointless; it was total war - learn from it.