you can use

if ($len($1-) > 5) {
    var %percent $calc($regex($1-,/[A-Z]/g)/$len($1-)*100)
    if (%percent > %caps) {

then you can have a way to set the percent of caps you want to kick for like

alias capset { set %caps $1 | echo -a I will Now Kick For $1 $+ % Caps }

or what ever