add Dashboard filters for Network, Profile, and Campaign that apply to all relevant data sources
Currently, adding a profile filter to a dashboard can require adding the nearly same filter multiple times. If a dashboard filter for profiles is being applied, it could likely be concluded that they want all reports within that dashboard to be filtered by the same profiles. I'd also include Mentioned Profile within this for the Mentions source.
Same as above would apply for Network.
Campaign could also be useful for the Posts/Clicks/Conversions/Lead Activities sources
Having a catch-all option for these would make this much more user-friendly.