You are correct in that he hasn't demonstrated anything that would indicate he would be a great HC. However, he also hasn't had the personnel or had the opportunity to recruit the personnel he needs for his offense to be successful. We also don't know how much CCS dips his hand into the offenses cookie jar so we don't know how much coaching KB is being allowed to do.
Additionally, what do we have to lose by allowing him to be interim HC for the rest of the season if we were to fire CCS after the ECU game? It's not like we can get any worse. Again, if he isn't able to breathe life into this team and get them to play better, more disciplined football, then we move on and hire outside. However, if he does breathe life into the team and we start playing better, then I think he would deserve the opportunity to coach the team going forward, and to hire his own staff.