Am I right in assuming that you can change talent denominations at any time so that you are not restricted in what you can bid during an offering?
We freely changed denominations.
Also, mosiacs can enclose an area with a diagonal touch on a corner? I ask this with regard to sanctuaries. I assume a sancutary is determined by the fact that you can't fit another piece inside and not by touching all side orthogonally?
I think the sanctuaries are more defined by mosiacs not fitting into spaces, so diagonal touches can create them.