About #1:
Repetitive indeed. I like the instrument that starts at 01:20. I like the change of the main (omnipresent) instrument at 00:51 and at 02:17 and I like the change of the background texture/noise at 01:10
Some randomization/putting the track into a blender would make it pretty good I think.
The abrupt ending is no good (or is it supposed to loop?)
I think generally it's good to say that your tracks sound good instrument/effect-wise, but need more complex structure.