I bought IWD on release day, i did the same with BG1, BG2 and enhanced editions.
Every few years i install them and play them again. I still enjoy them like the first time i played them.
But IWD is just to short, i don't count HOW as a proper expansion, it's more like a chapter.
So i'm wondering if Beamdog has any plans to make an expansion. I am pretty sure that everyone who own the game, will buy the expansion!
Please keep this post alive if you are wondering about the same thing.
Hopefully the developers see this post!