More gradiant options in dump/excavate toolset

Currently we can designate flat and up/down one level per tile, which among other things is fairly steep for trains. So unless you plan on adding tunneling as an option like bridges, or just for for aethetic/variety reasons, adding more gradiants such as half a level up/down every tile, a quarter, etc, to allow for smoother ramps/climbs where one level per tile up down just isn't desired.
It would be highly beneficial if nothing else for use in smoother ramps for trains unlike the tedious up one, one flat up one steps we do today. Plus it opens up options to further penalize/differentiate other vehicles in terms of climb performance. (Can a mega hauler climb the same ramp as a small trucky boi?)

Agree. And I desire more steep slopes than 1 level to excavate mines too.

This would be amazing. At minimum add a 12% gradient option to build a smooth ramp for trains. If the devs want to take this even further, they can add similar digging designations to Rollercoaster Tycoon