Trace flag 2301, what does it do?
Trace flag 2301: Enable advanced decision support optimizations
Trace flag 2301 enables advanced optimizations that are specific to decision support queries. This option applies to decision support processing of large data sets.
Honestly I don't think there is a perfect workload that will always benefit from one trace flag or another. Too many variables – these are things where, if your workload suffers from the pain a trace flag is supposed to alleviate, you have to test. It might make it better, it might not.