Further question regarding multiaudience

Question

I was able to get an advanced version of the multiaudience package running. Original Post This code here is working pretty well:

\documentclass{scrartcl}
\usepackage{ifthen}
\usepackage{multiaudience}
\usepackage{color}
\usepackage{lipsum}
\definecolor{red}{rgb}{1,0,0}
\SetNewAudience{internGER}
\SetNewAudience{externGER}
\DefCurrentAudience{internGER}
%\DefCurrentAudience{externGER}
% original definition
%\NewEnviron{shownto}[1]{%
%  @MULTAU@shownfalse@MULTAU@includetrue
%  \setkeys{MULTAU}{#1}%
%  \if@MULTAU@shown\BODY\fi}
\makeatletter
\RenewEnviron{shownto}[1]{%
   @MULTAU@shownfalse@MULTAU@includetrue
   \setkeys{MULTAU}{#1}%
   \if@MULTAU@shown
   \ifthenelse{\equal{#1}{internGER}}{
\textcolor{red}{\scriptsize\textit{[Following red text will be published in the internal version only: ]}\
   \normalsize\BODY}}{\BODY}%
\fi
}
\makeatother
%\long\def\showto#1#2{@MULTAU@shownfalse@MULTAU@includetrue
% \setkeys{MULTAU}{#1}%
%  \if@MULTAU@shown#2\fi
%  @MULTAU@showntrue@MULTAU@includetrue}
\makeatletter
\def\showto#1#2{%
   @MULTAU@shownfalse@MULTAU@includetrue
   \setkeys{MULTAU}{#1}%
   \if@MULTAU@shown \ifthenelse{\equal{#1}{internGER}}{\textcolor{red}{\scriptsize\textit{[Following red text will be published in the internal version only: ] }\normalsize #2}}{#2}\fi
  @MULTAU@showntrue@MULTAU@includetrue
  }
\makeatother
\begin{document}
\begin{shownto}{internGER, externGER}
\section{One}
Text for everyone. \lipsum[1-1]
\begin{shownto}{internGER}
Text for internals only. \lipsum[2-2][3]
\end{shownto}
Again a text for everyone. \lipsum[2-2][3] \showto{internGER}{And only an internal text}
\end{shownto}
\lipsum[3-3]
\begin{shownto}{internGER}
\section{Two}
Text for internals only. \lipsum[4-4]
\end{shownto}
\begin{shownto}{internGER, externGER}
\section{Three}
\lipsum[5-5][5]
\end{shownto}
\end{document}

However I'm facing two issues:

1. One can see that the section title "2 Two" is writen in black letters. (This does not happen when using article instead of scrartcl.)

2. I would like to create a main switch around this, something like "forceAllAudienceOn". When the variable is false, LaTeX should behave as normal without modifications.