Later_Gator suggested this in-game: an ironman warning. I agree, there should be something like a chat message from the server at 26:00 saying "Warning: You have one more minute to activate ironman mode".
Forgetfulness is why this suggestion was made, not laziness. Within the first ten minutes of each round, I easily become absorbed in my building and I tend to forget to ironman in time. If it wasn't for other people saying "ironman warning," I would have missed considerably more ironman activations. I think this message would be very useful to have.
Why don't we even have this already? It's something really useful and really has no cons. 9/10 of the players forget to ironman in time regularly. I'm sure.
This seems like deja vu for me. I remember when I suggested a message reminding you, that you were a zombie in CZS. And it was given the exact same reason for no (laziness of the player)....A few months later it was added in and everyone loved it.
I don't see any very good solid reason why it shouldn't be added. I don't think it would hurt the server or the players.