At least one thorough playtest using exclusively R. 2 boards to ID issues before rev. 3.
We need to make sure we catch all there is to catch in Rev. 2 before we order rev. 3. But the kits are a hodgepodge of various prototypes jumbled together. Amos needs to run at least one play test with at least 6 kids or so just using the new rev boards to make sure we will detect and nail down any issues.