I’m not sure if I follow it. I acknowledge I forgot about the “checkbox” exclusion but, does’t your solution below address it? Or you are referring to an issue with another specific checklist item in your checklist?
In any case, please note that – without resourcing to Xbench QA plugins – your upper limit for check sofistication is ultimately limited by the Xbench search grammar, which is a combination of POSIX Regex in one search layer and Xbench Powersearch on the layer on top.