This is almost right but misses one thing, this is not a democracy. It is how we sell it to the people with actual power, the nobility and the kings.
Yes, exactly and we sell it to the kings and queens by pointing to the happier -- or at least "not put off by Weird Magic Crap" -- people.
The nobility and kings are pleased by their people being pleased. They are also pleased if they are given a product that does not piss people off, because it means they can more easily make their people accept it with minimal grumbling, which means they can preserve their influence for other things. Rulers really love being able to preserve influence and popularity, rather than doing things that costs them.
That is what I have been saying in all my posts so far. Sell it to the people, or at least avoid making them feel endangered or passed-over (since fighting back the Chaos Wastes and ignoring Praag entirely might make them feel that way). And thus sell it to the local rulers, and to the kings.
Boris already knows why we are doing this, strategically and magically. He is concerned with Kislev, and with another Asavar Kul. He knows that this will help, he's all for it.
However, he
also has made noises about wanting to start off his reign with something to point to, like a canal or a Waystone helping out Praag. A public works project. A military campaign to get everybody used to working together and to achieving victory. Raising a few temples or something. Something to unite Kislev, or enrich Kislev, or to fire people up, or to just get them more used to doing a thing, or something. Whatever; you know, the usual "the beginning of a ruler's reign, try to start it off on a good note or do
something notable and distinct."
I think giving him something that'll make his people safer/healthier, will do that better than something that'll rile up Praag in the short term, or which will slowly increase farmland and increase economic ledgers. Though admittedly, the ledgers are going to be increased anyway, since eventually all 3 options will be done, just...
I guess I'm prioritizing appeal to the people over appeal to the ledgers, in terms of
presentation. Since the ledgers are going to be affected
anyway, whereas we only get one chance to make a good or bad first impression on the
people...