As someone who tags checkers to caches, I have found that many checkers have poor documentation as to what parameters they support. Either I have to hunt through the code to work out if something is supported, or hope I can find another tag that shows what I need.
Please fully document your options, at least put a summary in the checker description and full details at the top of the code (use --[[ ]]-- to comment out a number of lines)
And if you haven't already, please check your existing checkers and add the documentation.
It will make tagging a LOT easier!