Anyway, I think this is a clear win for the first option. The advantage of picking one of the most-accursed places in the Old World for our first deployment is that we don't have to then pick one of the most-accursed places inside of it. Like, if this were a place where the problems were a lot subtler, we'd need to go for the biggest and highest-visibility option in order to make sure the people we're advertising to would actually see our Waystones in action... but, like, "Old Town isn't that bad" is by the standards of Praag. There's a street where all the signs rewrite themselves every morning. Every night one of the plazas is full of unearthly screaming and people just sort of shrug and deal with it. Fixing those problems in the short term is a clear and visible win to potential investors in the Waystone Project: it makes it clear that this actually works to reduce Chaos taint, in simple terms that any meathead ruler can understand. The second option, however:
People hearing of this will hear of "she put down a stone and then local Chaos went mad". The sort of ruler who has a Wizard in their employ will understand that this is actually a good thing, but we probably did not need a lot of help convincing those people that Waystones are good. We need to convince magic-skeptical rulers that Waystones are good.
On an unrelated note, this is my ten-thousandth post on SV. I think it is very fitting that it be here, in this thread where 75% of all my posts have been made, and a post full of typo correction and detail-oriented argumentation.