I prefer humanoid forms of Brainiac as well, although nobody has ever really done him justice, I thought Gary Frank's aesthetic was good. I didn't think Brainiac needed be a big hulking guy, but the H.R. Giger style black metal with glowy LED lights was very good stuff. I'd personally like to see him a bit more Borg-like. Like Dani Filth as a bald, green super-villain.
I have no problem though, thinking that the bug-look of Morrison's Action story and the transition from Golden to Silver Age Superman, is some sort of "Larval Form", and that future models of Brainiac will be more cohesive and akin to the old versions, albeit hopefully slightly more skeletal and black metal as hell. And maybe with weird fiber-optic insect wings, because why not?