Floor tiles

[Inixus]

why no floor tiles for smooth base building, could even make platforms snap on to them.

[󠀡󠀡]

It's frustrating that there aren't even tools for making the ground normal aligned with gravity in bulk (or rather 180 degrees opposite).

[Marck]

There's the Alignment Mod augment for the Terrain Tool which does align terraformed ground with regard to the gravity at the location where you add soil (prependicular or parallel to the planet's curve). It does not produce the perfectly flat planes that some players request, because planets are spherical and thus the gravity's direction changes when you move along the surface.

Astroneer is a not about creating perfectly aligned straight lines and flawlessly smooth surfaces. There is some support for the latter with the Leveling Block. But in essence, you build more organically in Astroneer. Maybe they eventually will add base building elements like floors and walls, but I would not count on it.