Per Discord conversation I'm not a fan of the soil dirt system, that's not a fault of yours, it's just a personal preference.
Could a toggle to prevent rooty soil converting into dirt at all be implemented? This means once soil becomes rooty, it is from then onwards rooty soil. This means I could change how the block works in modpacks to instead drop roots and such, and allow reproducing dirts in other ways.
I'm cruel. This config would be amazing.

TLDR: doesRootySoilDirtify=false

• Be me.
• Think of this idea.
• Come to GitHub to see I already came up with this idea...

See DT podzol settings. Not sure how this works for DTTFC.