I agree that Augustulus and Ordacer mattered to almost no one by 476, which is why it happened the way it did.

However, the point I was trying to make is that Rome's decline sure lasted a very long time indeed.

Additionally, 235 being so important is only obvious in hind-sight. To anyone living in the Empire in 235, I suspect it felt an awful lot like the Year of the Five Emperors (about as far away from 235 as Diocletian is the other direction) and it wasn't until a while later that it became clear that no Septimus Severus type was going to be able to put it all back together quickly.