I feel like nothing is more disappointing than doing a 30 minute mat run only to get a piddly 20 or 30 iron (or even worse, none). I feel like mat runs should reward more materials as high tier upgrades require like 2-5 days of grinding with nothing but mat runs per level. Just a suggestion. Personally only sailing for like a week or two in a row just to max a single ship isn't exactly the funnest thing in the world. I'm curious if I'm the only one who thinks it should increase.