Calidores

[art128]

Nicely done, I like this town.

There are just a couple things you can consider. They're based on my personal tastes but I think they can apply to you as well.
Firstly, I've never been a fan of the Maxis hospital... I don't know for you but I always found it to be severely under-scaled for a large hospital and really commie looking. For your city I think Mickebear's hospital might look really good.
Secondly, I think you should have a look at Rivit's tunnel mod, imo they'd look good in your cities, rather than the standard maxis tunnels.  (IIRC, you'll need to redraw all of them.)

[feyss]

Awesome job, especially the rivers, as always 

[vortext]

Had some serious catching up to do here. First of all a belated congratulations on the first year anniversary!  The postcards are really well done, and I also really like your flag designs. 

Suradis Nova is nice as well and it couldn't be a more suitable location for Via Vortext indeed. 

As for a more poorer look to the latest city tile, iirc both Feroxx and Glenni have made some pretty run down w2ws which might be suitable. You could also consider incorporating a few of Jestar's industrial buildings, some of which fit in w2w environment, for a more grimy look.

And as per usual great work combining different kinds of waterways into a cohesive whole indeed.