For early(er) game terrain smoothing in Exploration/Survival, on Reddit we've been discussing either a rake or a cultivator for this function... and it would perhaps be nice if you had the choice/ability to make the brown dirt you filled in turn back to the natural/existing terrain texture when using it. I'm more on the side of rake for this feature. Though a cultivator may be a nice addition to farming (e.g. cotton planted in a "field" tilled with a cultivator either grows faster, or drops extra cotton, something along these lines)