Thanks for sharing your experience.I have been doing dermarolling as an addition to finasteride+minoxidil for 10 months.
Personally, I like the way dermarolling appears to keep the scalp in good conditions and appears less oily. Whether it has done much to my thickness or regrowth, I have no idea.
What I do differently is:
-0.5mm dermastamp (I have longish hair. Stamping takes longer but less tangles). It doesn't seem to 'wound' as yours does due to shorter needles.
-I do this 2-4 times a week, over the temples, frontal third, and crown/vertex.
-I still apply minoxidil straight after dermarolling. I always thought the idea is to improve absorption?
Perhaps I have always been a poor responder to minoxidil, I have not suffered any notable sides? or perhaps 0.5mm just isn't deep enough?