A fair point. However...-but given that Lars is the co-worker/arranger of so much of their stuff, and was the driving business force of the band for the first however many years, it feels like you're improving a band that wouldn't actually then exist.
Who's to say if Lars had been replaced early on that the other guys and perhaps the new drummer wouldn't have done the same? Remember, Lars learned all of that stuff on the fly which means someone else could have as well.
James even had a notion to sack Lars at one point.