Capacity planning capability in dashboards/widgets

As a user I want to have capacity planning reports with following sub-user stories:

• As a user I want to compare a widget (Top hosts, Item value) data at different points in time on one dashboard (screen). For instance, current values against yesterdays and previous month values.
• As a user I want to enable aggregations for item value widget;
• As a user I want a better flexibility in periods - dynamically choose by Time period selector or set overrides in the widget - e.g. display Top memory or network hungry hosts for today so far.