The panel recommends simulation and optimization of the following possible configuration, one of which should be chosen; either

• Two layers of active pixel sensors followed radially outward by a layer of ALICE style pixels (the HPD) located at a slightly larger radius than its present location, followed by the existing STAR SSD.
• Two layers of active pixel sensors followed radially outward by the IST1 and IST2 layers both at somewhat smaller radii than presently proposed, followed by the existing STAR SSD.

In the event the existing SSD can not be counted on as part of the future mid-rapidity tracking system, the panel recommends the following configuration be optimized:

• One IST layer (IST2) should remain approximately at its present location to recoup the functionality of the SSD. Inside this tracking layer, two layers of active pixel sensors should be followed radially outward by either a layer of ALICE style pixels at the present location of the HPD or a second IST layer (IST1) moved somewhat further in.