After a few months it is normal to see bumps or pimples where the hair was transplanted because that is the first signs of growth, but at this point you should not have any bumpy area, and the incision marks should not be visible either. The bumps could be due to a larger instrument used by your surgeon, typically a proper size incision should be between 0.8 millimeters to 1.1 millimeters. The hairs growing straight up is due to your surgeon placing them that way, it could have been careless, as the grafts do need to be angled properly to your natural growth pattern. Your photos do show low density, that is something that you could correct with another treatment, which could also hide the unnatural direction of your hair growth.
If your scar has lumps or not as thin as it should be, as long as the scar was taken from the appropriate location, the surgeon can remove the old scar and take another donor section and leave you with one pencil thin scar. The lumps could be due to improper cleaning, you may have had crusts develop on your stitches that weren't removed in time, or the stitches may not have been tight enough allowing stretching, or it could be keloids but that would have to be determined in person.
If your hair is thin enough than a surgeon can place transplanted hairs in between them, and cause very little to no shocking whatsoever; once again this has to be determined during a consultation, but from the photos I see it looks like you can have another treatment to the temples, corners and hairline.
How old are you? How long have you been using finasteride and rogaine? If you are younger than 40 in many cases surgeons would recommend you avoid transplanting to the crown region due to the possibility that you will lose more native hair and do not want to use your donor supply for an area that is not esthetically significant as the hairline, forelock and top of your head. They may still be able to do a small amount to make it look thicker, but usually they do not want to use a significant portion of your donor supply unless they are quite sure your hair loss has stabilized.
I hope this has helped you, you can continue looking around this forum for more answers or the individual surgeons websites.
I represent Dr. Robert True and Dr. Robert Dorin in New York City all opinions are my own. Visit us at www.TrueDorin.com