Feature Request: Latex type arrays with line end

This seems to be another plugin I've been looking for the whole time. When writing latex code I often have constructions like

\begin{matrix}
  a & b \\
  d & e \\\hline
f & g
\end{matrix}

Running VimTranspose doesn't seem to help here, because it assumes that there is no special delimiter at the end of a line. It would be great, if one could also specify a delimiter for the line end such as \\\\.*$.