JiffyPopTart
Bree-Yark
Now we are getting somewhere.1. Extra damage from crits is not straightforward as do you smite on the first attack if no crit or wait till the 2nd attack to see if you crit. Your decision point there matters and I never seen it stated.
2. It still doesn't sound like you are adressing my original question as you aren't looking at an average of 1 smite per turn. You are looking at smite only once per turn. Those are 2 different scenarios.
At my table we roll all of our attacks against one target simultaneously to speed the game up. We do not iterate them one at a time forcing a decision to crit at each attack.
My chart assumes you use 1 crit on the best place to put it.