though, i'm just a home buyer like yourself, i've done a lot of research on homes and went on numerous inspections. as some people mentioned above, the first two things that were listed on there are quite minor...
my biggest issues were the fact that you had areas of mold and humidity in the basement. as a parent who has kids, that is a major issue for me, and i would not buy a house that wasn't treated and given a confirmation that this mold / issue was taken care of by a professional. you don't want yourself nor your family to breath in mold or any other toxicities
the only way that you will have leverage on the first 2 items is if no other offers came in, and the sellers are desperate to move and need you to buy in order for them to afford their other property that they may have bought. if that is the case, it doesn't hurt to ask...what's the worst they can say? no? the best would be YES, and you can get something out of it.