We have already renewed our Datameer license for year number 2. They have come a long way since their initial release and I am expecting them to be a top BI tool in the coming year. The tool was built by one of the original creators of Hadoop. Therefore fits on top of a Hadoop cluster like a glove.
Employees with intermediate SQL and Hive knowledge can generate reports faster than using Datameer . It does have visualization tool but I don't think it is anything that cannot be accomplished by importing the data in Excel .