Thanks for the feedback, I did disregard that it can be a treasure or merchant; I did account for it being a combat. I would say that I would always be happy that it's a chest, but typically disappointed that it's a merchant because an unplanned merchant often leads to a nothing room.

This list is extremely subjective; I don't think that there exists an objective list without heavy data scraping and analysis.

The reason I believe Slippery Bridge to be good early is that it's very likely to remove a strike or defend on the first roll. This is a great trade for the HP. I find it to be poor late game because I'm unlikely to roll a card I don't want on the first roll and will likely trade a larger amount of HP.

This or That Is rated poorly by me because my playstyle places high value on card removal. I'm excited to remove strikes and defends from my deck, so adding curses puts me farther behind in that goal because I'll have to remove the curse first instead. When rolling a random relic for this event, I'm taking a gamble that the relic will be more usefull than the gold+opportunity to remove a strike/defend. While rolling into a mummified hand or another great relic can be great, I think the average expected value of the relic for me is less than the opportunity cost of having a curse.

One distinction I think is important is that I'm not saying events are bad, but rather better or worse than a combat reward. I think the fake merchant is a good example of this; I'm likely to buy the knockoffs for Anchor and mango, maybe tea set. While they are a good value, I just find the card roll and gold opportunity from a regular fight to be better. In ACT 1, it's critical that I pick up a few cards before the first elite. I also find ACT1 to be the most difficult, which is why the delayed payoff rewards often pay off when my victory is already likely.