Grid Elements

I'm not quite sure if this a bug or a missing feature. I'm talking about correct semantics:

Take a 2-column subgrid as an FCE example:

<div class=“container“>
    <div class=“span6“>some leftside content</div>
    <div class=“span3“>some rightside content</div>
</div>

Now imagine, that nothing has been entered into the left column. If you leave the markup unchanged, the right content will move left, to the position of the empty div. You could circumvent this behaviour by faking some content („ “ or „clear.gif“), but that's not semantic at all. It is a no-go. Better render the following:

<div class=“container“>
    <div class=“span3 offset 6“>some rightside content</div>
</div>

In a FLUIDTEMPLATE that would be no problem at all, since you can check for available content and create the matching markup according to the previous check.

To solve this by means of Typoscript you must know about the content of the left column when it comes to the wrapping of the right one. The problem was the very same in the TemplaVoila DS, where LOAD_REGISTER was a proper solution. I tried to find a way for register usage in gridelements for two days until I notices, that it can't work. Each column is handled individually – including RESTORE_REGISTER.

Is there currently any - maybe undocumented - feature to check for availability of content in another column? If not, a feature like that is urgently required.