Unfortunately, from our experience, dermarolling doesn't help with broken capillaries and you should try vascular laser treatment for that.
Dermarolling will not help with the dryness either.
Apply almond oil on your skin (while the skin is still wet) after a bath or shower. I keep a bottle of almond oil in the fridge and refill a small container that I keep in the bathroom.
For the dry parts of the face or body (such as around the eyes or on the back of the hands), I also recommend the Infadolan ointment that we sell.
Apply really just a little because it is very greasy. It is a semi-occlusive ointment that prevents evaporation from the skin and thus keeps it extra moisturized. Using water-based creams or glycerin on the skin does not moisturize it for more than a few minutes. Topically added water actually increases the evaporation of water from the skin. The skin contains enough water. The top layer of the skin works as a barrier that prevents evaporation from the skin. If this barrier doesn't work properly or is temporarily compromised, the skin becomes dry. Adding water does not solve this. Establishing a barrier that prevents water evaporation solves it. That is why oils are much better moisturizers than any light moisturizing cream because oils form a film on the skin that prevents the evaporation of water.
Retin A is perhaps not suitable in your case. It does not help with broken capillaries. It evens out skin pigmentations caused by overproduction or uneven distribution of skin pigment melanin and it speeds up diminishing of acne or post acne spots. It also improves sun damaged skin but not the damage to the capillaries.
For the skin texture, try a 0.5 mm regular roller but you must moisturize a lot, preferably with some oil. Due to your sensitive, dry skin, roll only once or twice a week.
Last but not least: As I have mentioned many times before, dermarolling is very effective for scars but not very effective for enlarged pores. Pores are not scars, they are ducts in the skin and their size is genetical. Very few of our customers improved enlarged pores with dermarolling.