I think we just knew about the sell back thing because it was a common enough trope in fantasy RPG video games of the time and was a natural enough desire to unload your unneeded gear to get better stuff. You'll notice that the Japanese edition is HEAVY on Gold, because you need a lot of it to spend on trying to upgrade your character, while in the EU timeline after the Game System is over you really don't get much extra gold, other than what's in the treasure deck (KK gives you a big reward at the end but that's that). In the NA editions the Alchemist Shops were added to try to soak up some of that gold buying potions you will need for later. But look at ATOH and WOM, you barely find any treasure compared to the game system when you're trying to build up your characters. After you find all the Artifacts (of which the NA has many more than the EU original) you really don't need much of the Equipment you formerly saved up for (except in the rare instance when they can be destroyed, otherwise all lost Artifacts are found again early in the next quest or replayed remix of the quest you "failed"). A lot of the new Artifacts to be fair are able to be used up (Elixir of Life, Spell Scrolls, Ring of Return, etc), or replacements for missing equipment (Wizard's Cloak taking the place of the Cloak of Protection for the Wizard).
Just making the monsters stronger isn't always the best way to make a quest less easy (it tends to increase the overall length of the quest as well, which not everyone wants). But each GM decides what it is they are wanting as far as the experience. The EU edition doesn't let you sell stuff back or retain Treasures and there are no death saves, which tends to blunt the fact that so many monsters have only 1 BP even if you finally decide to work together instead of "competing."
There is also the implication that cards limit supply or stock of Equipment items in the EU editions (they absolutely explicitly do in the Japanese edition, which also implements a house rule many people used which was that you have to walk adjacent to a Treasure Chest to open it). It is heavily implied (and a lot of players assumed this) and Milton Bradley actually revised this in the Adventure Design Kit saying you just write it on your character sheet. While this wasn't a huge thing, it did mean that there would be more sets of armor, shields, helmet available instead of having it go to just one hero (depending upon how you played, some might have thought you just got one per buying session, others that you only had one the entire campaign).
Anyway this thread was about quest differences not necessarily a review of how to make the EU and NA editions better, but you can get that from the way I was discussing errors in the NA quest being corrected with reference to the original edition of the same quest!








= one hit
= one hit & pushback
= cancels one hit







