With the next WIP release, there will be a newly written MeshRepair command. This command was rewritten via RhinoCommon / ETO to ensure cross platform compatibility. Functionality wise it will appear similar to the original with the exception of the Fill Small Gaps panel. This panel has been removed and a Match Edges button added to the Advanced panel to replace it. Please compare it to the original and let us know of any differences from the original you might find.