Don't worry, unless they set up a vote to "banish all US Copyright protected works" the inevitable RIAA/MPAA pressure will sort out the project by itself. I'm not delusional to claim Torrents are without legitimate purpose - they are - and I'm also not delusional enough to believe hosts/developers are powerless to address piracy of sorts.
Search result priority is largely irrelevant for rare or specific files, since there are going to be few results (at least, few clearly different torrents) and each result is going to be inspected by looking at the file list.
Indexing file names is the search quality improvement you need most. For example, I tried searching for "Pretty Polly", by the Poison Girls; moderately popular niche music.
There are 0 results for "pretty polly" and 2 results for "poison girls", one of which is a complete discography collection containing that song. Imagine the results for more popular and prolific authors.
Yes, here in India blocking happens on port 80 only. Kind of nice, comply with the requests from the government but don't really block anything for the good of masses.