4. Exploitation of natural resources: These large corporations massively exploit both human and natural resources as most of the profit generated from doing business in the host country goes directly back to the parent country
It is good that you mentioned this and it is important to note it that corporations or multinationals exploit the host countries resources for the advantage of parent company in their home and as you mentioned again in your last paragraph that they are not charity organizations, this means that no matter how it is painted that they recruit locals (which sometimes are underpaid), their sole aim is profit taking because they are not charitable but profit oriented.
However, there is something that is suppose to be the responsibility of these multinationals that I have not seen in your list and that is that they are suppose to perform some social responsibilities to the host countries which is apart from employment of locals. So I don't know if this should fall under advantages.
Multinationals corporations are suppose to perform social responsibilities to host countries that they exploit their resources and degrade there environment. The first reference is Nigeria where her Naija Delta have been badly degraded by the oil companies, excavating, rig and drilling activities that have changed the suppose natural blessing to gnashing of teeth because of the neglect through the Nigerian government. The region that is laying the "golden egg" for country have been neglected and this has caused droughts and food insecurity because their soil have all been bastardised because of oil drilling activities . The soil degradation that has caused them their agricultural products losses is not only the challenge there, their waters also have been polluted because of the oil drilling activities and acquatic lives is suffering as the people are predominantly farmers and fisher men, they also suffer regular floods.
Consequently, the oil companies or multinationals should do well to be perform their MOU with the communities of their hosts and perform social responsibilities to communities where they are like build good road networks, award scholarship to the youths, clear up oil mess in the region, support them in aspect of need since they have taken away their environment with them, employment is not enough.