In the work order list view, it's possible to adjust start-/end dates, responsibility, and so forth. However - the information normally used to sort, order and filter maintenance activities actually lies in the maintenance job lines for the work orders.

Consider a very common case where a work order workers from different trades (e.g., one electrician and two mechanics): This work order can't be bulk-adjusted on the header-level, since there can be dependencies (i.e., the electrician has to finish his/hers activity before the mechanics can initiate their activities) and the responsibilities often are separated based on trades even though they are activities within the same work order.

This type of information should be shown on the work order lines as well - not only the schedule lines - since it's very relevant even prior to scheduling.