As far as total number of quests in an open world RPG goes, 200 isn't as many as it sounds like. Dragon Age Inquisition for example has around 400 quests, and it's considered pretty sparse compared to other western RPGs. Skyrim has around 500 unique quests, ignoring the randomly generated ones. The Witcher III last I checked was over 600 quests, and that was before the last DLC expansion came out.

So yeah, 200 sounds perfectly reasonable.