As we all know Arma is really messy when it comes to strings and case sensitivity, same strings are and are not case sensitive depending on the situation.
So even though it's the autumn years of the development I though I'd suggest a new alternative syntax for toLower akin to the alt syntax of toFixed, or even adding a new command all together so that all strings in a given scope would be treated as lower case or upper case, as in:
<scopename> toLower <scopename> toUpper
Would convert all strings in the given scope to lower/upper case
Would convert all the strings in the scope where command was issued to lower/upper case