The comparison isn't terribly apt; for example, LibreSSL's intention is to be a drop-in replacement for OpenSSL; if nginx were a drop-in replacement for Apache

The comparison isn't terribly apt; for example, LibreSSL's intention is to be a drop-in replacement for OpenSSL; if nginx were a drop-in replacement for Apache I suspect we would see a lot more people using it than there are now. As for auditing OpenSSL, the OpenBSD team has found so many problems, misdesigns, misfeatures, idiotic decisions, and bugs, that it seems a shame to repeat that work again. If I had to choose, I'd say give the OpenSSL name to the OpenBSD guys, let them take over the project officially, and let the folks behind the OpenSSL foundation handle things like platform-dependent code, FIPS compliance patches, etc.