Describe the request
Make sure to include:

1. What problem or issue would this enhancement solve?
   Blocks not falling like vanilla TFC gravity blocks. (i.e gravel can fall down slopes and hills, etc)
2. Describe the feature itself - what would change, what would happen. In general more detail is good!
   It would allow configuring blocks to follow TFC's gravity mechanics for soils and cobblestones, an example would be allowing vanilla sand or gravel to fall like TFC sand or gravel.

Meta Info

• TFC Version: 1.12.2-0.27.3.103 (at time of request)
• Is this a compatibility feature for other mods? Or a enhancement for TFC alone?
  Both.

Can I suggest the mod Repose, by delvr, which does this exact thing.

Repose would be a good option if it allowed disabling the "slope" effect, which it does not.
It also appears to conflict with TFC's falling mechanics, resulting in soil blocks being duplicated, placing a soil block could cause two blocks to fall, or cause them to fall into the same direction and drop an item drop for one of the blocks.

What version of Repose is being used? Configs don't show anything of the sort. @alcatrazEscapee
Ah, ingame configs, sorry.

In which case, see #645

Repose would be a good option if it allowed disabling the "slope" effect, which it does not.

Wrong. See Sloping Blocks: None