Thanks guys 
 
 (07-01-2021, 11:15 PM)bigus Wrote:  That's interesting because I always thought the 2D slopes were hard coded.
Unfortunately, they are. This is just an experiment of mine, trying to find a visual workaround.
Essentially, I repurposed an existing hexside ("embankment") to create slopes. I then placed instances on the maps tracing the elevation contours (I automatized the process so that it takes a second instead of hundreds of clicks 

 ). It works quite well.
The main drawback is that we effectively lose the hexside being replaced. If we had a way to add a custom hexside to the game that would be enough, however I don't think it's currently possible to add new terrain features.