It would also help Tactician if the gamesystems are finalised. Having to change systems than switch up regular and Tactician would be an extra timesink doing it later when it's just one pass would be more efficient.
Also another here coming to Larian with Divinity II (Dragon Knight Saga though). Was a lot more fun than I anticipated when buying it, and that's what gets one keeping an eye on a developer... which totally paid of with D:OS, and now hopefully, D:OS2.