I had dermabrasion performed on my nose at the beginning of October. I have two scars in a similar location as yours, although I think they may be deeper. I went to an experienced plastic surgeon. As of now, over 2 months following the procedure, I am still undecided as to its efficacy. I think it smoothed the scars somewhat, because when I run my fingers over the scars they feel less deep. However, I'm not sure that they look any better. The redness has taken a long time to fade.
My surgeon told me that the nose is among the most common areas he dermabrades, because ermabrasion is used to blend the scars resulting from Mohs skin cancer surgery (which is most often performed on the nose). He told me that the nose tends to heal well because of its sebaceous nature.
The pores in the dermabraded area are enlarged now, and are more pronounced because of the foundation I wear to cover the residual redness. Prior to the dermabrasion, the pores surrounding the scars were not particularly visible. I do have oily skin, and the pores on my nose clog regularly. This has not changed, however I am limited in the treatments I can use on the dermabraded area because of increased sensitivity.
I have used antibiotics intermittently since the dermabrasion to try to clear up these breakouts without using strong topicals. I wish I could report that the dermabrasion worked well, but it really is a mixed bag. My nose is much more irritated, and so I feel the area stands out more now than prior to the dermabrasion.
Years ago, I had two treatments of Fraxel Re:pair that produced negligible results (although my overall skin texture improved). Just yesterday, a different plastic surgeon performed a light subcision on the scars and injected Belotero filler. Too soon yet to report on the ultimate results of that. The area is still bruised, there is definitely some filling although not 100% level (probably more like 50%), and I think the filler is making the surrounding area puffy and further emphasizing the pores. I'm ultimately hoping to have silicone microdroplet treatments. Sorry to say, nose scars (and acne scars in general) tend to be difficult to treat, and are probably best attacked using multiple modalities. Good luck with whatever route you take, and know you're not alone in this!