There are some incredible locations in the Origins DLC that help make the content worthwhile. The Gold edition is absolutely the better value since it includes AC3 as well, but you’re right that if you aren’t going to play it, it’s not worth the extra money.
The extra content that came with the gold version definitely helps you out in the early game for sure. The game is so huge, it's not really necessary. You can always buy the season pass later. Season Pass content is excellent and adds dozens of hours of extra game play, so if you can afford it, go for it :)
Yes, if you are a fan of the series and you know that you will also want to do the dlcs even if you find some things you don’t like about the game. You also get the Desert Cobra pack so you already have a legendary weapon at the start, if this is something that appeals to you. But keep in mind that not everything is included, as it is the
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