Stopped watching when he said treasury was a promo card, but probably could have as soon as he said he gets explorer as soon as he can. Okay, I get that it's just about cards that are fun to play, but it was just sort of painful to listen to.
Tribute as an honourable mention at the start already hurt. I didn't mind the Treasury thing that much; I expect normal people have trouble remembering which expansion every card came from, and he may have just forgotten about the expansion symbol in the bottom right. No big deal. Explorer is OK. I think it's fun too.
Off the top of my head, my favourite cards are:
10. Caravan
9. Shanty Town
8. Trading Post
7. Menagerie
6. Conspirator
5. Chapel
4. Monument
3. Margrave
2. Highway
1. Bishop
I enjoy activating Shanty Town, Menagerie and Conspirator. Margrave is fun because it does so much. I'm not sure why I like Trading Post so much. Monument and Bishop are just fun for VP, and you can start getting +VP right away, unlike Goons.
This is a pretty interesting kingdom, I think. One neat thing is that you could actually do a golden deck even with a discard attack on the board. It would be a 6 card golden deck with Menagerie. Margrave ensures you can put Menagerie in your reduced hand, which can draw back the rest. If Margrave isn't played, Menagerie can still grab the sixth card. Would that be competitive against an engine with Margrave and Highway?