Well then, assuming that CBHC gets installed correctly, and one's got it up and running... What kinds of common mishaps might cause bricking, may I ask???
Based on what I know about the installer, the installation seems pretty bulletproof. The thing I could see people screwing up is trying it with a non legit title. After it is installed moving the title to USB or deleting it is a 100% brick. Updating the system (if Nintendo actual pushes one) should be assumed to brick as well. So far only one user reported bricking and he got the same error msg that one gets when the NAND corrupts due to hardware defect. I'm thinking that his Wii U may have died of natural causes.