While not a entirely original design (fans/readers of the excelllent Shang Chi: Hands of Kung Fu will immediatly recgonize "him") He did served the Bane prototype related to Batman. The genious thing with Bane is that he`s basically Doc Savage gone rogue which is a great narrative twist and a hard to beat foe for any street level hero. Beast otoh is more like Ivan Drago. He didn`t made himself, he was ingeneered. That said, Beast was there first and all you really required was a change of garb but I can totally see how Bane coming him made Beast obsolete (aside the Cold War thematic asthetic anyway). It wasn`t like Starlin stayed after killing Robin to flesh him out.
Beast`s recent appearance with clear upgrades in RATHO paints him well. He`s a free agent and makes a parallell between him and Jason having "no country" any longer which incidently also automatically means that his upgrades weren`t Government mothered, which can only propel him further. I`m not going to erase his bouts with Nigthwing but as far I am concerned he should be a rogue to the two of them more often considering Bane has since been upgraded as the Batman foe.