I use LingQ both for intensive reading/listening and sentence mining.
My Spanish is advanced, so I don’t need audio clips for my SRS system anymore as text does just fine.
But if I were to start another language, I would love a feature where LingQ would make audio clips from the audio I uploaded for the SRS.
I personally have a horrendous short term memory and the “natural SRS” doesn’t work very well for me, so my deliberate study is more of a sentence mining/mass sentence paradigm over intensive reading.
I would almost want to switch to migaku as it’s finally getting more user friendly, but LingQ is still superior because of it’s superior word bank/dictionaries and the abilities to upload from anywhere.