FYI - I did not watch the two videos attached to this article nor have a read anything or watched any other videos about Origins because I don't want to know anything about it I just want to play it when it comes out.
Assassin's Creed games are fun and simple action games that you can easily jump into and out of and which even with just short chunks of time available to play you can do a thing or two meaningful.
Now that they're transitioning to RPG as an official genre label for their next game, I hope that the gameplay will live up to the label. AC Origins as an action game was just fine. AC Odyssey as an RPG will have to offer a lot more intricacies, interesting things, and far more robust character progression than what AC games have offered so far, otherwise they risk getting hammered with "AC as an RPG."
Writing quality along with choice and consequence in dialog is a good start but by no means is that going to be enough, especially when AC Origins as an action game was way too long if you do everything since the gameplay becomes way too repetitive before even the halfway point of the main quest.
Some superficial things off the top of my head is that they should make all gear and mounts meaningful with stats. I didn't care about clothing or mounts in Origins because they had no stats. There's rumor that some mounts may be slightly faster than others, but I could not discern anything significant in that area. Also, when it come to gear, they need more "slots" because melee weapon, ranged weapon, and shield are too few for an RPG and even for an action game, kind of boring. Gear itself should provide more stat variations to help keep things interesting and meaningful for how somebody wants to play.
They really ought to let you develop your character the way you want to play such as sword n' board, ranger, assassin (rogue), and what not. Their skill trees could use a lot of work to make the available skills a lot more interesting and remove really dumb skills like "auto loot." I think they could actually remove a lot of superfluous skills from the skill tree while making what remains a lot more interesting.
One thing I really loved about Origins was the game engine itself. It has massive potential. The map has few loading screens and is massive and contiguous. And you can climb. I imagine Daggerfall with the Origins engine and think, "wow." They need to add day and night. They need to add real weather. They need NPC's to perhaps have schedules, react to day/night/weather, and generally simulate real people to a greater degree. Last but not least, if the map is going to be as gigantic or bigger still from Origins, it needs to include more interesting things beyond just standard "points of interest" things like raid a camp or reach a high point or kill an elephant. If not, make the world smaller and keep it interesting that way.
Crafting, if they keep it, needs to be a lot more interesting and way WAY less grindy when obtaining materials. One thing that really irked me with Origins (the only AC game I have played to the end) was that I spent a lot of time early on farming ore and various hides only to find out by the late game that I'd have zillions of those anyway but be lacking the one remaining material (a type of ore can't remember exact name) which prevented me from improving my gear until quite literally the very end of the game. Bottlenecks like that should be avoided.
AC as an action game I give it a thumbs up. AC as an RPG, we'll have to wait and see.