There are after-game battlefields in Beyond Divinity, so you can keep playing with your hero and summoning dolls. The battlefields are optional areas (different each act) with several merchants and randomly generated dungeons, which you can visit from the main game.
If you want to go back and visit previous locations from the main game or have NPCs all congratulate you on your heroic deeds, etc that is not possible. Otherwise, try the demo and decide for yourself. There are several topics comparing DD and BD.
