Daniela, I actually have similar feelings. After so many rejections, I really think that no news is good news, although April 15th is getting a little too close for comfort...
I have to agree with Postbib Yeshuist. Most LORs would support the applications in the best way, and little can really be told about the applicant from the LOR, especially if the LOR is from an unknown academic. Most schools put a lot of emphasis on the SOPs, and that's where we have to shoulder much of the responsibility.