It’s true that the tutorials could be clearer, and there should be an option to view all the tutorials that have already been presented to you in a list.
However, most of the things you’re complaining about already have a tutorial or can be read in the item descriptions, so it’s likely you skipped those tutorials and then forgot about them.
I agree that falling is a bit too punishing, especially in the Crucible.
I understand that there are some enchantments whose description is not very clear but the majority of them are simple and easy to understand just read them, It’s not hard to make a build that you can beat the crucible with (even if you only use gems which are weaker than enchantments) as long as you use a weapon you’re comfortable with and put your level points into the right attributes for your build.
Big changes have already been announced regarding the game systems that will change the way you build your character, Classes will be introduced, and level attributes will be changed or removed, with the intention of making the system more intuitive.
As for the enchantment system, there have been a lot of complaints from community, especially because of the RNG, then the devs asked for feedback on a change they wanted to propose, If you’re interested, we can talk about it here: New Gearing System Announcement Feedback.
This is a common problem, but in reality the game has a tutorial which explains what the various elements do:
, you surely heve seen it but you didn’t read it (it’s not your fault because this happened to many people, and there should be an option to view all the tutorials that have already been presented to you in a list).
Plague is not stronger than other elements, especially if you don’t have a perfect build around it. The unique sword you’re using is strong enough and has a nice and unique gameplay style, but it’s not stronger than other “well” enchained weapons, just because it’s unique.
Blue, purple, and yellow gear are more or less equally strong, but unique weapons (yellow) are often weaker if you don’t make a perfect build around it. Purple gear is potentially the strongest, but it has curses that make it harder to use.
There is no benefit to wearing a full set (other than the drip), I understand that other RPGs do this but it’s obvious that you won’t find information about it if you search for a feature that doesn’t exist.