The scope of WBAN is wide enough to monitor the health information, work performance, and perform activity classification of the individuals. Each of the operational and behavioral requirements has scope for different application areas. The mobility based iM-SIMPLE protocol already exists to identify the effective forwarder based on distance, energy and provides energy and packet size evaluation. In this paper, an improvement over the existing iM-SIMPLE protocol is provided by including the direction, organ criticality, and session preservation concepts. A more effective routing method is defined to observe each node and network level aspect to fulfill the communication requirements of each of the application areas considered in the present work. The algorithmic formulation is also provided to offer controlled communication in a single WBAN. The paper also provided the analytical study of each of the operational areas respective to the body sensor placement and effectiveness. The comparative results of the proposed improved iM-SIMPLE protocol are computed against the existing iM-SIMPLE protocol for six different application areas. The observations are taken against residual energy parameter. The node level evaluation verified that the proposed routing protocol has improved the node strength and network life for different application areas.