[@Blackstripe]
Well we do see Arkham Bane toss Bats through a wall, rip off building chunks and then burst right through another wall, all of this effortlessly, [url=https://www.youtube.com/watch?v=I84uXWmKx4E]in Arkham Asylum[/url]. Bane does this with his first boost in lord knows how long, after being drained of all Venom and left to hang in a pretty nasty-looking contraption. He also survives being blindsided by the Batmobile, which is practically a goddamn rocket tank, after having most of his drugtubes severed.

Powerlevels aside, by your own account just a matter of whether he wants his character to be stronger and fight stronger things, I legitimately don't understand why Bane can't just have his gimmick as-is. From day one, when he became one of Batman's most memorable opponents, the impossible aspects of his strength and endurance has been linked to drugs. Venom and Bane are intrinsically linked, even if he's had doings off the juice. I don't get why you'd want to force Bane to add something else to that.

And like, it's really easy to justify the drug boost to be any given level. A secretive, precise mixture of experimental drugs, further fine-tuned to Bane's already outstandingly powerful physiology, bam, done. It's crazy comic book drugs. They have the effect the writers want them to have. Snowflame could trade fisticuffs with a cyborg and cover himself in flames by snorting coke. An extreme example, but still. Hell the Arkham games had Titan which could make any random goof into a monster arguably stronger than Bane.