Perhaps using a ton of compression would help ?
There must be a reason that fingers bring out more of the fundamental for longer ( slow attack ) and hence we hear this full bass tone
I can achieve the same bass EQ with a pick but it’s not as complete a sound if that makes sense, down to fast pick attack on the string I guess
In drumming comparisons it’s like the felt pad on a bass drum pedal ( finger ) compared to the plastic ? bass pedal pad .. ( pick ) fast and bright bass tone
Not trying to re- invent anything but curious to why so many pick players don’t miss that fullness of the tone yet can still be punchy and bright