As weaksauce mention the main goal at this point is not the speed but correctness and support more SQL features, but performance is very important, the next release should be faster by 20% because the migration to gix and after be stable as language and engine features we will work more on optimization
The Goal is to provide most of the SQL features so if one query can replaced by command we should support it so user is free to choice any tool also to do filter on git branch you need to get it in format and use grep on linux but it's very easy for most developer to filter with SQL language
SQLite VTables is great but i want also to have some customization inpsired by MySQL for example user defined variables and functions, maybe add PUSH or PULL Statement and control the features