Yea it's a cop out really.
Just implement the bookings and reds properly and as consistently as possible.
I'd even rather straight reds for the offences this blue will cover. Instead of pissing about with 10 minutes sin bins everywhere just send them off.
It will be carnage for a while but not for long when players and clubs soon start being punished accordingly.
Not quite a red but a blue card will just mean most matches have these where one team is at a disadvantage and it's dragging it out as I don't think it fixes the issue long term.