That is pretty awesome. When I'm talking about performance and stability, I'm just saying we're still seeing a lot of low hanging fruit being taken care of. For example, Liz is still beast-moding away each week at enhancing the performance of lists, sets, & bags by 100-1000x in some cases. At some point, nearly all of those kinds of fixes should be already fixed. At some point in the future, it'll start getting used over Python I think.