The beginning of runs in particular for Cataclysm are a bear because you’re starting underpowered with 450 instead of 600 power and also no properties or traits on gear. As a player, I feel greatly incentivized to hold onto my coins instead of buying green/blue shrines because they don’t offer enough for their cost. Orange/red shrines at least offer traits and 600/700 power respectively for what you pay, which is typically more valuable than properties that can roll low, random, and be almost useless anyways.
80 coins for green upgrades is pushing it a bit for 50 power, so maybe 60 would be better? For blues, 160 is a lot of coins for not a whole lot to upgrade. I wouldn’t bother with paying any more than 120 (if that). It’s also important to consider that you don’t even get 50 power total. You get 25 because your power is split between your two weapons. So just to get 50 power, you’d have to pay 160 for a green melee and ranged weapon.
Honestly, the way I expected upgrades to work is to have reduced cost for each upgrade, similar to an investment. So if you pay 80 (or 40 for a random) coins to get a green, it would only cost 40/80 coins to get a blue because 40/80 respectively would be taken off the top. And half that maybe if you wanted to reroll the same tier weapon. That way it’s like “Oh cool, I can invest in this early and it’s okay because it makes later investments cheaper.” rather than “Oh I never want to buy a green/blue because they’re so expensive and boons are generally a more reliable/powerful investment for the cost until I hit orange/reds.”.
I feel a change like this would be healthy because players would be more prone to spending coins on upgrades, be a little stronger for it, and it may help curve some of that frustration players can get at the start of runs when they’re still pretty vanilla. This is most strongly felt on Cataclysm because of the power/property disparity between Adventure runs and Chaos Waste runs.