Hmmm very interesting!!
I did know about the problem with the Spire doorway, had that happen to me and I seem to remember someone having their horse's head sticking through the door - strange!
There aren't so many locations for the T-Queen to be but to not have her show up because of Kol?? Do let us know! While the shards are most often found in the same places - I don't think it's a given. I'm sure I had one game where I found a shard in a completely different location than normally expected.
P.S.(I preordered Dungeon Lords finally!

)