Of course, this is an option for those who have problems. I didn't have any problems with the Warrior. True, my Necromancer was on a backup path, but he wasn't needed. I think it will be needed for the main hero.
Kitsune why give Elves to the Necromancer? He has enough Necromancers. IMHO, the Necromancer should have Necromancers, and the Elf should have Elves. I have long used the tactic of two heroes. First, the foreigner dies, and then the main hero finishes off the enemy.