[Taqwus]

Regarding magical site searches, the interface could in theory help out even more. For instance, since searching is deterministic and there's a hard cap on the number of sites in a province, there are times when a given commander's search or a particular divination spell -- Auspex, Haruspex, Augury et al -- cannot produce any positive results.
If a commander has no searching ability that's superior to that already used in the province, perhaps the 'search' option should be greyed out.
A similar filter (greying out provinces) would be nice for the divination spells, but that would probably be harder. I would suspect that all the remote-targeted spells use a common path through the code for selecting provinces, and that it may not have the support for filters, e.g. accepting a set of trinary flags (must have this, must not have this, don't care) or perhaps a function pointer for a more general filter that could perform the appropriate tests given pointers to appropriate data structures. It would be nice, 'tho.