Hi 
Despite being a long-devoted and happy user of base curve , I haven’t given up on learning the modern approach simultaneously.
My second, but not less important, goal was to work out a new style for my edits, more or less resembling the look of analog film.
Well, Filmic RGB should be extremely helpful on this 
Remap the tonal range of an image by reproducing the tone and color response of classic film.
There were two conditions, though - the style cannot be harmful at all, fitting all the pictures as a safe default ready-to-go and/or starting point and no LUTs allowed - darktable built-in tools only.
I have tested it on my photos and those below, from Signature Edits:
To look good, it should only require a boost to the
exposure(be generous with it) and / or adjusting the mask inTone Equalizer.
I hope it can be helpful, especially for the newcomers to darktable
Also, although I have been learning a lot from many of you and enjoying following countless interesting discussions and explanations (tireless @anon41087856 !), I’d like to thank @difrkaguilar for sharing his ideas, workflow and files with me 
Here’s the download, feel free to use it:
Leniwiec Film Stock.dtstyle (4.4 KB)
