Here's the beginning of the Idea for you to test. See my blog post here.
For testing & tuning purposes, I've not posted the WMS link here. Please contact me through the LinkedIn group (see below)
You'll have several choices: Blue Marble, Landsat 7, OpenStreetMap, and for those wanting US-specific mapping; DRG and NAIP.
Consider this at alpha stage.
LinkedIn group associated with the test/capability.
Retrieving data ...