I have 2 Ideas.
And a Very important edit.
1. STOCKPILE IDEA
The stockpile fence looks Weird on the ramp.
Stockpiling things is gonna look weird on ramps.
Maybe (and I Know this is coding related), have stockpiles Dodge around ramps, when you designate the stockpile.
As always, make it toggleable, but Maybe 'on' by default?
The logic here is, that stockpiling a Boulder on a steep ramp, probably isnt a good Idea Anyway.
And its gonna look really weird with the new "3d" ramps.
It already ruins the illusion of 3d, with the stockpile fence not reacting to the clearly increasing elevation.
2. BRIDGE IDEA
Some clever shading, Where the bridge meets the ramps.
Maybe, make the sides of the ramps (the sides connecting with the bridge), Really stand out as 'this is the end of this ramp, and there is no terrain next to it'. So you can easily tell the sudden drop in elevation. If you catch my drift.
Give the ramp sides a 'rough and shaded edge' that doesnt perfectly connect with the adjecent tile, when there is no adjecent ramp or natural wall.
That way, thered be a small irregular and shaded space between the bridge graphics and the ramps, showing their position relative to eachother more clearly, while the terrain would still look natural, and "taller" than the bride.
Hopefully.
THE VERY IMPORTANT EDIT:
the way that walls cast a soft shadow on the ground in halways? That kind of shadow Should Also be applied at the end of those ramps Where they meet the bridge ,and be cast onto the bridge, to indicate that the bridge is at groundlevel
And Also from the walls north of the bridge. That would complete the illusion.
(In most cases, depending on the material of the bridge)
When the bridge is drawn up, it Should cast the shadow itself, to simulate the bridge acting like a wall, being tall and impassable and all that.
Currently, the raised bridge looks like an empty flowerbed.
All in all, progress is looking super tight tho!