Listening to SchleierenKraft (writing as I listen)- a pad set a reasonable distance back certainly wouldn't go amiss.
However I wouldn't actually change all that much. It's got quite a tight-sounding style already, and adding much else might make it sound a little busy.
That high synth around 1:35 made me expect something resembling the tight little 3-chord riff in It's The Beat by Simian Mobile Disco. Maybe you could make more of ithe high synth, you build up to it really well. Top song by the way, look it up.
It would definitely benefit from a second section with a different riff from 2:45. You have that high synth again there. I suggest letting it ring out while you breakdown/change gear. You also bring in a new synth just after - postpone it 'till after the new section, and make more of it.
Good work on that one, all in all. I enjoyed your inky IDM endeavour.