Pobs in mining field sure. They harm piracy as much as they make for quick and easy ore storage.
But LIS and other bases in front of House capitals? What are those interfering with? Besides i can assure you that if you park your ship on front of manhattan, your are going to be killed by the docking ring missiles rather than LIS platforms. John explains it better in the post above, its not like LIS is instakilling things or blocking something or providing a quick escape from piracy or whatever. And on top of that Its still very easy to get around LIS and evading it completely.
But nonetheless if you're on an unlawful, you do -not- belong in -Manhattan orbit-. Just like that, and its not like anyone is going to pirate there anyways. Manhattan is like the capital, the heart of Liberty, so what kind of cutting-edge roleplay of yours is this harming or interfering with? Dogfighting in front of the Mooring fixture? Or parking some scylla or a Ranseur on top of Newark?