I am a fan of Online and Single Player RPG's. There are many RPG's that should never be online (DA:O, Elder Scrolls, Fallout, Divinity II, Gothic, etc), but I do enjoy MMORPG's like Everquest, LotRO and a few others.
I would say keep Divinity solo and keep improving the series and building on the lore with out trying to please online and offline gamers.