Agreed. I threw an axe in fear when I saw Elena AND Azlar among the final bosses, but that might not have even been needed.
My team was 3600, Obakan 3/70, Alzar could have been swapped for Colen and likely wouldn’t have been much of an issue.
Edit: Possibly the biggest thing is to make sure everyone’s fully charged by the boss level. You’re not on a timer so if you waste a little bit on the 4th wave right before, it doesn’t matter much.