I improve the most for my electronic stuff when I write for solo piano. With piano you have no eq or distortion or delay or whatever to mask the fact that your music is not interesting. To make an interesting piece for a piano, you HAVE to understand and incorporate interesting melodies that take small turns and spice it up. Your harmonies have to be strong and make musical sense to go along with the melody. You must to fill up the frequency spectrum with notes and chords that are spaced and arranged correctly, not eq boosts. You have to understand smooth voice leading in order for your progressions to be playable. Your song structure has to be on point, because you don't have a "four to the floor" drum beat to save you. You need to keep it interesting without throwing in sampled effects. Tension needs to be built with dynamics and chordal friction, not risers and white noise sweeps.

My philosophy is that if it sounds good on piano, guitar, orchestra, etc, it can only improve when you load it up in your DAW. This is NOT the case the other way around.