Would this feature make sense?
Source:
{: .smallquote }
> ghi
>
> jkl
LaTex output:
\begin{smallquote}
ghi
jkl
\end{smallquote}
A user could then define the "smallquote" LaTex environment with:
\newenvironment{smallquote}{\begin{quote}\small}{\end{quote}}
Michael