We are internally keeping a file via excel pluging that compiles mobile traffic data of all relevant report suites. Problem is the relevant reports such as mobile devices or mobile manufacturer are not available via plugin, which means time consuming and manual checking of the mobile browser traffic each time the report is updated. There is no workaround for that. This traffic will even increase in future once we have implemented our mobile optimized websites.
Do you plan to include the full set of mobile reports into the plugin for some time in the future? Excel client has not been developed much for a while, as far as I know there is no new version in the pipeline just now.