I have a minor bug to bring to your attention, the "In-market Segment" in the Google Analytics API is declared as "ga:interestMarketCategory" (see attached screenshot), when the correct definition is "ga:interestInMarketCategory"
This is quite insignificant as I barely ever need it, but it would be nice if it could be corrected. I am using the latest 2.9 b1474 (15/10/2014).
On another note, you might be interested in Google's MetadataAPI which provides always up-to-date definitions of columns: https://developers.google.com/analytics/devguides/reporting/metadata/v3/ not sure if you can build it into Omniscope but it might make things easier between versions!
Also lastly I was wondering if in cases such as this it is possible to build manual patches into connectors, perhaps by editing config files or is there/will there be such developer functionality for connectors?