I have never been a fan at all of randomly generated generic stuff. Mostly because they seem like either:
1. A misguided attempt to add replayability to the game.
or
2. A cheap copout that gives the developer an easy way to add hours to the game without spending any effort creating interesting and unique material.
The Battlefields in Beyond Divinity are, to me, a huge flop. They replicate the least interesting parts of Divine Divinty, like the first and last dungeons. They also replicate the boringest parts of games like Dungeon Siege, which I quit playing after about 10 hours.
Random generation of cookie-cutter crap does not add replayability to an RPG. A robust and balanced role-playing system is what adds replayability. Approaching problems in different ways is what makes a game fun to play through a second time. There's nothing special about fetching a spiked belt vs. a special scroll in some huge randomly-generated dungeon, so why do I care what the item actually is?
I hope that Divinity 2 does not have this Battlefields. Compare the Battlefields with the huge, open, rich world of Rivertown, Aleroth, and Verdisis in Divine Divinity. There is simply no comparison.