We've used the example iDashboards.aspx file to put dashboards on the initial page in Staff Web View after login.  It looks fine in 15.1.2 (BlueWave theme) -- the dashboards occupy everything below the module tabs at the top down to the print and email buttons at the bottom.

We upgraded to 15.1.3.  The BlueWave-based theme still looks fine.  As an experiment, I applied the UltraWave theme.  The site looks OK in IE8, but in Firefox the dashboards are only about 150 pixels tall.  This is strange, because the non-script part of the example is simply:

These charts were developed for ASI and our customers.

Australia and New Zealand states.

UK counties, covering England, Scotland, Wales, Northern Ireland and Shetland/Orkney Islands.

They may be imported in the iDashboards Admin portal, under Plugins, as Single Maps.

A simple worksheet for brainstorming chart content.

We have a new sharing site for iDashboards, where you can see and download a set of sample dashboards. With dashboards for Membership, for Events, and for Fundraising, it will do a lot to get you started quickly. You've got to get trained and using this terrific new add-in to iMIS.