e-Newsletter custom template advanced customisation

Hi,
I have previously created a custom newsletter template without issue.
But I now want to create a more advanced template where the content is structured.

The current system has a a WYSIWYG editor for content , but no ability to drop out to HTML, which means that structuring layout of content is limited.

In an ideal world, I'd like the ability to input a post ID (multiple times) and that would take the featured image and excerpt and link and structure that up (just like an archive page really), but unless the code is seriously 'hookable' I guess I'm going to have to just work in manual HTML.

Sorry if my question isn't very clear, but in essence I'd like to do content structured with multiple rows e.g.

<!-- content -->
			<div class="content">
				<table>
					<tr>
						<td>

							<h1>Great Scott!</h1>
							<p class="lead">Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et.</p>

							<!-- A Real Hero (and a real human being) -->
							<p><img src="http://placehold.it/600x300" /></p><!-- /hero -->
							<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. </p>
						</td>
					</tr>
				</table>
			</div><!-- /content -->

			<!-- content -->
			<div class="content">

				<table bgcolor="">
					<tr>
						<td class="small" width="20%" style="vertical-align: top; padding-right:10px;"><img src="http://placehold.it/75x75" /></td>
						<td>
							<h4>Title Ipsum <small>This is a note.</small></h4>
							<p class="">Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. </p>
							<a class="btn">Clickity Click &raquo;</a>
						</td>
					</tr>
				</table>

			</div><!-- /content -->