Yes Alrik, it's true, BG2 did have a load screen claiming you'd be able to continue your adventures in NWN1: OC. However, NWN1 was pushed back quite a few times if I recall correctly, and I suspect the primary focus was changed from SP to the whole toolset thing (as mentioned in the thread already). However, saying that the editor was the goal all along is something I find hard to believe, or we wouldn't have had indications years before release that it was going to be the heir to BG2.
I also enjoyed HotU greatly, and still consider it a great campaign.
I also enjoyed HotU greatly, and still consider it a great campaign.