The company needs to order a SNB in order to gain relief from the "scope choke" in the UPA.
They can order all the 737s they want, but unless they order a new Small Narrow Body (SNB-100 seat-class class airplane), the company is limited on the amount of 76 seat regional aircraft they can have.
Good new is the 737 order was truly for growth! They still need to get a SNB to accomplish what they want.