Sargot currently holds a major geographic bottleneck. So moving the town may affect the gameplay somewhat. What others have suggested about just renaming the town is a better solution in my mind.
Nah, it won't change anything, AI does not respect bottlenecks and what-nots. Sargot is too close to Jaculan, and the northern border of Vlandia lacks a town. They could move another castle or town into the "bottleneck" but it won't change much, though if they move it they'll 100% fill the area with something, it won't be a blank space. Again, there's no reason to be against their changes, it's obvious that they know more about it than you or me, so just let the devs do their work, without testing it prior to the change you have absolutely no clue if it'll work or not, you're just accommodated with it, still, it is a irrelevant change that means a lot "lore-wise".
As for map changes the most critical will involve Sturgia, so the entirety of the norther map is likely to change, and they'll probably redistribute the location of many fiefs, hence why they've not moved it yet most likely.
Me? I have absolutely no idea if or when they'll apply those changes, and if they don't I don't mind tbh, I don't really care. You'll still benifit way more by taking control of 4 bound village towns than by "geo-location", and as far as I am aware Sargot isn't one of them (4 village Towns), if I'm wrong and it is, then their strongest Geo Location will be the North, which not only makes sense since they are supposed to split into Swadia and Rhodok, but it also makes their disputes with Battania way more interesting since Sargot will be priority target for 2 kingdoms (Battania and Sturgia), shifting the power a lot. With Sargot being on that town cluster**** to the south, Vlandia rarely if ever lose stability. Charas and it's nearby castle are practically worthless (Castle has only 1 village while Charas has 2 villages one of them producing horses, worst fiefs of the map imo), if instead they put a new castle nearby Charas might become a bit more viable. If they fill it with villages, Charas becomes more viable too.
Sturgia, though, is still the one that suffers the most when it comes to fiefs, changing their position might translate into significant impacts, but most of all, they are the nation with the most ****ty towns of all others (2 bound villages for all except Sibir and the port town to it's south, which has a village so hard to access that it's in practice like having 2 villages economically.)