Hello mate and welcome, dont be shy because you dont speak english, most of us are also latinos!
1. I dont think the Skyrim leveling system would work, it was added in early alpha of the elder scroll online and was a total disaster. However i do think that you can get bonuses for alternative activities in the game, aka professions or other minigames. (in wow i leveled an alt through battle pet...i dont think that leveling through alternative meaning should be that easy either btw)
2. Genshin impact isnt a MMoRPG, having that level of animations in a raid or a 20vs20 battleground will lead to a MASSIVE lag. However, i also support not using the modern system of WoW. I miss the old talent trees and make hybrid classes. For example, mix shield and arms warrior talent trees to be a gladiator, aka, a mixed custom class.
3. I think the loot system is one of the most important topics in a MMoRPG and one of the reason why it could turn into a toxic community. I think that the content (so the loot) should be balanced for all, not divided between casual and hardcore. Why? because it was one of the main reasons why WoW turned toxic as fuck. Casuals behaving like hardcores, everyone using RaiderIO, everyone wanting only Meta classes and specs in their group. Dividing the community is not the answer but the very disease. The most the community is like wow classic, the best. And remember that raids and content escalate with your level (and so the loot), its one of the main features of the game!!!
As for the point of equipment, I think I must insist, have an option for those who do not have much time to play, or want only to dedicate themselves to the story, in wow there were countless times that I could not finish the story because I had to enter a dungeon or raid, and after 3 minutes they took me out for not having the "main equipment" of my class. bfa I never finished it, because nobody wanted to help me finish the biggest raids.pedia helps in the game and was totally ignored, so much so that for legion, I had to wait for the expansion to finish, when they were all at maximum level to finish the history.
If they repeat that, we only let you play if you are well equipped; this game won't beat wow. if or if you have to take into account that part of the "hardcore / toxic" community, because they will arrive and there the fun is over.