I'm hoping this reply will reach everyone subscribed to this thread.
As a first point of business, I would suggest you give the new Intel MPI Library 4.0 a try. It came out last month and includes quite a few major changes. You can download it, if you still have a valid license, from the Intel Registration Center, or grab an eval copy from intel.com/go/mpi.
Secondly, we have plans to improve our tight integration support with SGE and other schedulers in future releases. So stay tuned.