A lot of distrust in the comments, I think the point is that the lines are blurred so frequently between yellow and red cards that this gives us something to give for a controversial offence. Effectively solving the current problem
I honestly think its a really good idea. Lets say it was a definite orange and a red/yellow was given? Harsh/soft but not as infuriating as a definite yellow being turned into a red or vice versa, it will be much more bearable and vastly improve the perspective we have of the officiating imo.
I am understanding that a yellow + orange would still mean a sending off (red) right?