Sorry are you trying to argue that it would be stupid to put tiburtus to the left of richard and scarlett? rather than the other way around?
Lets assume you are right and that tiburtus would only ever load up simultaniously to any one of the other 3 damage dealing heroes in this roster once every 100 battles ( I hope you see how absurd your claim is that it is just 1% ) then putting tiburtus left would be better in at least 1% of the raids. So unless a different order is better for some other reason there is no reason to not put him on the left.
I am thinking that I would rather have the best possible order to punish an opponents unlucky cascade rather than ingore it all together just to go against the grain. There are many things to consider when setting up a defence team and order of fire is one of those things. It isn’t the most important thing but to dismiss it entirely is something that I happen to find amusing. Anyone with a decent IQ would at least take it into consideration.