My main pre sets I use don't really need this but I have come across a few profiles that are 'wooly' in the low end. Normally I would just pass up the profile but this seems to be a good way to take a minimally good tone to the next level! Jesse Fildes has a bunch of greta videos on YT and in one he covers taking a slightly darker pre set with out much definition then using these features to clean em up.
Top of my list tip to try! Just wonder if others use this?