I've seen several agendas (hostile takeover, and breaking news) that can be scored with no response from the runner. If i recall correctly, there were no agendas in original NR (or one, i'd have to check) that were scorable with only 2 advancement tokens. 2 advancement means that the corp can install, advance, advance and score the agenda in the same turn, disallowing the runner a chance to interact with the corp.
I hope there are not many of these types of agendas, as it allows the corp to score without having to protect the dataforts, and seems a bit annoying for the runner to put up with. Of course, the runner can try to get these out of the corp's hand by running there, but this will be all the more difficult, as the corp can consolidate its ice to better protect its hand, since extra ice on agenda dataforts are not needed.
Thoughts?