The rewrite for the meetinghouse locator service is actually underway and will be a huge improvement upon the current version.
Feedback on the meetinghouse locator service, including reports of any inacurate data, should be directed to the "Feedback" link on your ward's map or directions page:
http://lds.org/portal/site/LDSOrg/menui ... deNav=true
It's good that development of the new locator service is underway. It is needed.
About two years ago, I reported that the directions to get to the meetinghouse in Dayton, Oregon said to turn left from Highway 18 onto 8th St, but 8th St. is an overpass with no ramps. Someone athletic with a grappling hook and climbing ropes might be able to follow the directions, but not with a motor vehicle.
I reported that issue and was informed a new locator service was in the works.
Since then, I found that the meetinghouse in Newberg, Oregon shows up with the star in the middle of a trailer park. In reality, the meetinghouse is a block or two away. I reported that to 'feedback' as well.