Iron man is easy right now: just be an iron man and don't save it (and pray there won't be a bug or crash or power failure)
I would like 6 man party, because now I can have just 4 classes max in a party, obviously, which isn't nice. At goblin camp last time I had 3 rows of character portraits, my party outnumbered about 1:3, then my Wizard fallen asleep, and had to wait until each goblin decided what to do. Can't say it's balanced around 4 or anything. But then with this party UI being as it is, maybe it's better to have smaller party, I wish I had just 1 character instead, no more drag those chains around.