This is what ESA is promising us with there new Proba-V stallite. Proba V is the latest in the line of these small almost cubesat type systems. It mhas fours band (B,R,NIR,MIR) with a resolution of 350m and global coverage every 1 or 2 days. It was launch in May and the first global compsite after the commisioning phase has just been published:
They promise composites like this every 10 days. Its a natuatl follow on from the SPOT veg product and MERIS and comliments some of the MODIS prodcuts.
Data distribution like SPOT veg is though vito:
http://proba-v.vgt.vito.be/content/welcome-proba-v-website
but its not nearly as open or easy as MODIS