Choice Grouping / Insertion (Feature #280)

I´m not quite sure if i´m to stupid to find the Funktion and this is a Support request or there is no such functionality and this is a feature request ... but I search/want something like:

The \element{xxx} \shufflegroup{xxx} \insertgroup[xxx] commands (that already exist for questions) in an equal manner for "choices" like:

\celement{choicesC} {
\correctchoice{BLA1}
\correctchoice{BLA2}
}

\celement{choicesW} {
\wrongchoice{BLA3}
\wrongchoice{BLA4}
\wrongchoice{BLA5}
}

\element{question1}{
\begin{question}{1}
\begin{choices}
\cshufflegroup{choices1C}
\cinsertgroup[1]{choices1C}
\cshufflegroup{choices1W}
\cinsertgroup[2]{choices1W}
\end{choices}
\end{question}
}

or even better

\celement{choices1} {
\wrongchoice{BLA1}
\wrongchoice{BLA3}
\correctchoice{BLA2}
\correctchoice{BLA4}
}

\element{question1}{
\begin{question}{1}
\begin{choices}
\cshufflegroup{choices1}
\cinsertgroup[1][2]{choices1} % arg1 = amount of correctchoice | arg2 = amount of wrongchoice
\end{choices}
\end{question}
}