Hey John, why are you limiting these challenges to only 'pure' autolisp?
It would be fun to use all the tools in the bag then bench the vl variants against themselves as well as the pure autolisp against themselves then a total bench.
Maybe have the participants name the functions like so to easily keep track:
VL-<USERNAME>-<FUNCTIONNAME>-<#>
VANILLA-<USERNAME>-<FUNCTIONNAME>-<#>
Just a thought
