I get where you are coming from but that's why I mentioned low level iron men/women. Let's be honest no one is going to take someone with crappy combat gear in a raid team. I'm not saying to have the rocks throw out diamonds and rubies every tick. Maybe the average inventory should be 3-4 Ruby's and 2-3 diamonds.
Therefore, I suggested you to do some Wall safes, wyverns.
A low combat level account can kill a wyvern easily with a anti-fire shield. I did it myself on my ironmen.
And like I said in my previous post, Ironman is a grind and that's how it is supposed to be imo!